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TECHNICAL>TRAINING ACADEMY>WALLS INSTALL GUIDE
Altro Whiterock Installation guide
Introduction to Altro Whiterock™
Updated 05/30/19
Altro Whiterock Installation guide 2
This publication is designed to provide technical information to assist in the installation
of Altro Whiterock. Except where noted, this information applies to the complete range
of Altro Whiterock products.
The recommendations herein are derived from actual field and laboratory testing by
Altro’s technical specialists. The procedures are widely accepted in the wall covering
industry.
Install Altro Whiterock according to the definition of standards in this guide. Any
deviations from this definition of standards are to be attempted solely at the risk of
those specifying or attempting the actual installation, and are not the responsibility of
Altro or its distributors.
Bidding and installation of any Altro Whiterock should only be undertaken by
professional installers versed in the required tools and techniques for professional
installations. Failure to correctly install Altro Whiterock will void the Limited Product
Warranty.
Technical Department Our technical department, product knowledge and walling expertise is what sets Altro
apart from our competitors. We are here for you every step of the way from planning,
through installation and even maintenance for the expected life of the surface.
Michael Hafferty
USA
Brad Schaible
USA
Nick Stein
USA
John Loupelle
Canada
Lesley Da Silva
Internal Support
800.377.5597 ext. 3239
Skip Johnson
Technical Manager
Chris Kephalas
General Manager
Join us at the Altro Training Academy!
The goal of the Altro training academy
is to train and qualify a network of
professional installers who wish to
become part of a specialized group of
recommended Altro installers and fitters.
Altro stands behind our installers and
always recommends that customers use
Altro trained installers.
Three training centers
• Wilmington, MA USA
• Santa Fe Springs, CA USA
• Mississauga, ON, CAN
Course content
• Product overview
• Pre-installation
• Installation practices
• Thermoforming
• Adhesives, tapes, sealants
• Heat welding
• Joining accessories and methods
• Floor to wall transitions
• Detailed installation techniques
Contact Lesley for more information or to register for a class!
3 Contents
Contents of installation guide
Chapter 1
Introduction 4
1.1 Safety procedures 5
1.2 Altro Whiterock product overview 5
1.3 Limitations of Altro Whiterock 6
1.4 Installation tools + equipment 6
Chapter 2
Pre-installation 7
2.1 Preparation 8
2.2 Job-site conditions 9
2.3 Making your work table 9
Chapter 3
Installation practices 10
3.1 General installation instructions 11
3.2 Thermoformer 12
3.3 Measuring for bends 13
Chapter 4
Adhesives, tapes and sealants 14
4.1 Adhesives 15
4.2 Tapes 16
4.3 Sanitary sealant 16
Chapter 5
Jointing methods 17
5.1 Heat welding system 18
5.2 Joint strips 20
5.3 Two-part joint strip 20
5.4 One-part joint strip 21
5.5 1” Double-sided tape with joint strips 23
Chapter 6
Floor-to-wall transitions 24
6.1 Floor to wall overlap transition 25
6.2 Floor to wall heat welded transition 26
6.3 Installation over epoxy 27
6.4 Two-part joint strip 28
6.5 Connecting to flash cove with a two-part joint strip 28
6.6 One-part concealed transition trim 29
6.7 Fitting to quarry tile base 32
Chapter 7
Additional details and maintenance 33
7.1 Wainscot installation 34
7.2 Door, window and pipe installation 34
7.3 Installation over ceramic tile 35
7.4 Terminating Altro Whiterock at true ceiling wall intersection 35
7.5 Terminating Altro Whiterock at drop ceiling grid 36
7.6 Terminating Altro Whiterock above a drop ceiling grid 36
7.7 Adhering directly to the ceiling using heat welding method 37
7.8 Adhering directly to the ceiling using two part joint strip method 38
7.9 Altro Whiterock maintenance 39
Introduction 4
Notes
Topics
1.1 Safety procedures 5
1.2 Altro Whiterock product overview 5
1.3 Limitations of Altro Whiterock 6
1.4 Installation tools + equipment 6
Chapter 1Introduction
5 Introduction
Notes1.1 Safety proceduresApart from the normal health and safety rules employed within the industry, the following rules should be noted:
• Safety information displayed on all materials must be strictly adhered to.
• Wear appropriate safety equipment (check with local, federal, and OSHA regulations).
• Safety eye wear must be worn when cutting materials, mixing adhesive, cleaning and preparation of site, and
where necessary to adhere to site regulations.
• Use face masks and all appropriate safety shoes, cut-proof gloves, clothing, and all other items that are required
by local, state and/or federal guidelines and regulations.
• Ensure good ventilation, provide forced air if required.
• Remove and dispose of waste as per all local, state and federal guidelines and requirements.
1.2 Altro Whiterock product overview Altro Whiterock is a semi-rigid, smooth, and very durable vinyl wall system. The material is thermoplastic and can be cut
and thermoformed into specific bends to suit the contours of the building.
Its semi-rigid properties allow Altro Whiterock to be installed over most sound substrates with minimal preparation and
disruption.
All joint, transition, and edge trims are high quality vinyl. Co-extrusions incorporating a neoprene gasket for the most
water resistive seal possible, can be considered watertight when installed vertically. When installed horizontally they
may catch water. When incorporated with heat welded, flash-coved Altro flooring, the system is ideal for such areas as
operating rooms, clean rooms, and laboratories.
Typical applications for Altro Whiterock
• Accents / cabinetry / mill-work / decorative
• Back Splashes
• Clean rooms
• Corridors
• Food production
• Hospitals
• Kitchens
• Laboratories
• Locker rooms
• Manufacturing
• Operating rooms
• Pools
• Showers
• Spa areas
• Sterilization areas
• Veterinary clinics
Altro Whiterock product specifications
Panel Sizes4'x8'2" ** 4'x9' 10.25" ** **Actual sizes may vary slightly
(1.22m x 2.5m) (1.22m x 3.0m)
Thickness 0.10" (2.5mm)
Weight24 lbs 29 lbs
10.4 kg 13 kg
Composition: Extruded semi-rigid PVCu* panel. * u means unplasticized
Introduction 6
Notes 1.3 Limitations of Altro WhiterockAltro Whiterock panels can be applied to most surfaces. They should however, not be installed near a heat source such
as, steam kettles, pizza ovens, cooking ranges, steam rooms, etc., or where exposed flame or severe heat could cause
distortion of the Altro Whiterock panel.
• Temperature Range: Altro Whiterock panels should not be exposed to temperatures above 140° F (60° C).
Altro Whiterock can become brittle at low temperatures and is not recommended for installations subject to
temperatures below 23° F (-5° C) where it is exposed to high impact. It is fine in chill rooms and refrigerated
storage but is not recommended for freezers.
• Before the testing of kitchen equipment, which is likely to expel severe heat, extraction systems must be
operational. Failure to do so may result in expansion problems.
1.4 Installation tools + equipment Installation Tools List
• Items with magenta bullets are required and available from Altro
• Items with gray bullets are required tools you must have for Altro Whiterock Installations
• Items with orange bullets are recommended for Altro Whiterock Installations
Hand Tools:
• Edge Scrapper (Skarsten Scraper)
• 3/16” Square Notch Trowel (MLN) for most applications
• 1/4” Square Notch Trowel (CTB)
• 1/8” Square Notch Trowel (PRB)
• Rubber Mallet, non-marking
• Wall Roller
• Anti-static Solution
• Caulking Gun
• 3’ (1 meter) & 6’ (2 meter) levels
• Small Block Plane
• Tape Measure
• Hole Cutters / Drill Bits
• Laser Level
• Ladders and/or Scaffolds
• Chalk Line
• Hammer
• File
• Mozart skiving knife
• 5’ and 10’ Straight Edges
• Versablade Trowel Handle
•4mm Narrow Flow Tip
• Trimming Knife Straight Handle Spatula
• Diamond Sharpening Pad
• Steel Clean Out Brush with Xacto Handle
• Metal Trim Plate
Electrical Tools:
• Hot Jet S Welder or Triac BT Weld Gun
• Altro Whiterock Thermoformer™
• Plunge saw with track guide and vacuum
• Jigsaw with fine toothed blades
• Drill (for mixing paddle and hole saw)
• MultiMaster cutter such as a Rockwell RK5139 K
oscillating tool kit
Recommended tools
Please refer to the separate
Construction tools catalog
for a complete list of the
tools and equipment offered
at Altro. Your instructor
will take time to review
the walls portion of the
Construction tools
catalog and explain the
30 day tool discount
offered for Training
Academy attendees. 1
Construction tools catalog Individual products and tool kits for floor and wall installation
Tech>tools>catalog>USA+CAN
updated 08/25/17
7 Pre-installation
Notes
Chapter 2Pre-installation
Topics
2.1 Preparation 8
2.2 Job-site conditions 9
2.3 Making your work table 9
Pre-installation 8
Notes 2.1 Preparation All surfaces must be smooth, sound, dry, and free of contamination. The wall should be cleaned prior to the installation
of Altro Whiterock. The working environment must also be dust free. Failure to comply with these conditions will reduce
the bond strength between the adhesive and substrate, and may cause the Altro Whiterock panels to de-bond.
Surface preparation
1. All substrates to be dry to 16% WME (wood moisture equivalent) on Protimeter ‘Survey master’ equipment.
2. All loose, flaking paint and dust to be removed.
3. Friable surfaces to be removed or made sound.
4. All surfaces to be free from grease. Ceramic tiles to be thoroughly cleaned and de-greased, rinsed and left to dry.
5. Loose tiles are to be removed and area is to be filled with appropriate patching compound.
6. Depressions in substrate surface should be filled with appropriate patching compound.
7. All electrical switches, power points etc., should be in a first-fix/installation ready state. All electrical equipment
should only be moved or altered by a qualified electrician.
8. All plumbing should have fixtures removed to a first-fix or installation ready state and “tails” left protruding from
the substrate. Altro Whiterock panels can then be drilled and slid over the pipe tails. All holes should be drilled 1/8”
(3mm) oversize to allow for expansion, then sealed with Altro sanitary sealant. Plumbing should always be done by
a qualified plumber.
9. Hot pipes and steam pipes should be insulated and a 1/4” (6mm) expansion gap should be created when installing
panels around these pipes, then sealed with Sanitary Sealant.
10. All pipes, fixing bolts, etc. extending through the Altro Whiterock panels should have a minimum 1/8” (3mm)
expansion gap and be sealed using Altro sanitary sealant.
11. Door frames and door casings must be in place prior to the installation of Altro Whiterock.
12. Prior to installation, it is advisable to complete any painting which comes in contact with Altro Whiterock, as the
sanitary sealant used at junctions is unpaintable.
13. Priming of dusty and overly absorbent surfaces may be necessary for very absorbent or dusty substrates. Use 1
coat of any readily available water based primer (Valspar, Benjamin\Moore, Glidden, or equal).
Wall and substrates
All surfaces must meet these requirements:
• First, check the room using a 6’ (2m) level to ensure all walls are flat and plumb, paying particular attention to the
corners, window reveals, and door entrances. These need to be inspected to ensure they are free of any debris or
irregularities, which could prevent the panels from laying flat to the substrate.
• Very absorbent / porous substrates (particularly plaster finishes and very dusty or unprimed sheet-rock) must have
one coat of primer (Valspar, Glidden, Benjamin\Moore, or equal.) applied to the surface a minimum of 12 hours
prior to the installation.
• Walls should be smooth and flush. High points must be removed and low points filled with filler intended for the
substrate and environmental conditions.
• Wall tiles must be fixed firmly to the wall. As long as the tile edges do not protrude you do not have to skim grout
joints unless heat-welding.
9 Pre-installation
• Surfaces must be permanently dry and free from all substances that
may contribute to adhesive bond failure.
• Remove loose paint and conduct an adhesive bond test with painted
surface.
• Exterior walls must be adequately damp-proofed and insulated.
• Drywall substrates should be paint ready and completely dust free.
• If the corners are deemed out of plumb or vary too much, the
General Contractor/End-user needs to be notified and asked to
make repairs. 3/16” is considered the maximum tolerance.
Storage and handling
• If storage temperature is below 68°F (20°C), Altro materials must
be moved to a warmer place and allowed to reach this temperature
before installation. The room temperature must not be below 68°F
(20°C) and the wall substrate temperature between 65°F (18°C) and
80°F (27°C).
• Altro Whiterock, Altro Puraguard, Adhesives, and Accessories
must be stored in enclosed dry conditions and not subjected to
freezing or excessive heat. Heat above 140F will distort and damage
the material, cold temperatures will make the material brittle and
temperatures below 23F should be avoided during the storage
process.
• When stacking pallets they should not be stacked more than 8
pallets high and stacked flat without bumps or rolls and in a square
and well aligned configuration, safety precautions should be taken to
secure pallets to prevent shifting or falling.
• Eye protection should be used and care taken during cutting, fitting,
and thermoforming procedures.
• If more than one pallet of material is used, use material in sequence.
• Panels and all other materials should be moved into the acclimated
worksite 72 hours prior to installation.
• Panels and all other materials must be checked for defects before
installation. Do not install materials with visible defects.
• Check carefully to see that panels match in shade. If a shade
match cannot be accomplished, do not install. Contact your Altro
distributor.
2.2 Job-site conditions Operating temperature
Altro Whiterock will withstand service temperature of up to 140°F (60°C).
If cleaning with hot water, temperature should be regulated to a maximum
of 140°F (60°C) and not to be localized for an extended period of time.
Environment
Altro Whiterock should be installed in an area with ambient temperatures
between 68°F (18°C) and 80°F (27°C). Areas to receive Altro Whiterock
must be weather-tight and conditioned to the approximate temperature
and humidity conditions of the finished room.
To ensure that expansion and contraction parameters are not exceeded,
Altro recommends that Altro Whiterock is installed at approximately
the same ambient service temperature at which the room area will be
when commissioned. Normal expansion is provided for in the fitting
of the material within the joint methods/strips and the silicone seals at
abutments.
Suitable surfaces
Check adhesive data for specific requirements
14. Good quality, brick or block-work with well aligned joints and all
irregularities repaired and made smooth. Must be straight to within
1/8” over 6 feet and bricks/blocks flush with those adjacent.
15. Minimum 1/2” thick sheet-rock/plasterboard.
16. 1/2” Durock or Hardibacker or most ceramic tile backer boards
17. Minimum 3/8” underlayment grade plywood.
18. Minimum 3/8” underlayment grade MDF panels.
19. Ceramic tiles are securely bonded to the substrate fully clean and
free of soap scum and all other containments that may inhibit
adhesive bond (two-part W39 adhesive must be used).
20. Most sound painted surfaces (an adhesive test is advisable to
determine suitability).
21. New sheet-rock, plaster, and pink finishing plasters are generally
dusty. Surfaces to be brushed and thoroughly sealed with paint
primer.
22. Metal substrates. If metal is susceptible to rusting, apply a coat of
rust inhibitor.
2.3 Making your work tableTo create your workbench needed you will need the following materials:
• One 4’x8’ piece of plywood (¾” thick) - 10’ if using a 10’ Altro
Whiterock panel
• 2” x 4” or 2” x 6” support beams - or appropriate length to support
table top
• Stands for Thermoformer using 2 sets of legs (saw horses)
Installation practices 10
Notes
Chapter 3Installation practices
Topics
3.1 General installation instructions 11
3.2 Thermoformer 12
3.3 Measuring for bends 13
11 Installation practices
Notes3.1 General installation instructionsNote: All terminating edges of Altro Whiterock that are not being heat welded are to be Chamfered/Beveled on both
front and back edges so as to remove any sharp edges and to allow the greatest surface area for the application of Altro
Sanitary sealant.
1. Apply a level datum line around the entire installation area. The datum line is used for the calculation of
measurements for ceiling/floor height, outlets, pipes, etc., and to ensure the panels are plumb as the installation
proceeds. It is advisable to set this datum line at 5’ (60” / 1.55 m) off the finished floor. This way the line is near eye
level and is easy to locate when placing the panels on the wall. The datum line height can be adjusted to suit the
installer.
When installing the Altro Whiterock panel as a wainscot the wainscot height will require a lower datum line location.
Datum lines can be quickly set up and established using a laser level and chalk line.
2. Place panel on the workbench and inspect for damage. Carefully mark your datum line on the protective film on the
face of the panel, using a pen, taking care not to press too hard, and possibly damaging the surface of the Altro
Whiterock panel. Your datum line on the panel should also consider if the panel is flush to the floor or the height of
the cove reveal.
3. On the wall: measure from the datum line down to where the panel is to end.
On the panel: starting from one of the finished ends of a panel, make a mark on the face of the panel with that
same measurement. Repeat this measurement on the other side of the panel and draw this datum line across
the panel face on the protective film, this is your datum line. You will use this to measure off all of your height
measurements. As you have used the bottom of the panel to arrive at your datum line, that bottom edge will not
require cutting.
3a. On the wall: Measure from the datum to the ceiling or any other point where you need to determine the
height of a cut. Always allow a minimum of 1/16” space between the panel and any abutment.
3b. Cut the panel using a jig saw, circular saw, track saw and track, multimaster or any other appropriate
method you choose.
4. Once cut for height and penetrations make any bends as needed using the Thermoformer (See section 3.2
Thermoformer on page 12). Caution it may be necessary to leave your ceiling cut 1”inch longer as this will allow
the direct scribe of the panel to the ceiling when the corners are out of square/plumb; the scribe is done to the
pane a 2” straight edge or by using dividers set to 2”; the panel seam edge at the leading edge of the panel may
now also require that it be re-plumed / re-leveled and cut to fit straight up and down and level. Peel back and
remove the protective film approximately 2” (50mm) from the edge.
5. Hold the panel up to the substrate, check for fit and panel edge plumb/level ensuring you have a minimum 1/16”
(2mm) expansion joint at all abutments and pipe work, and other protrusions.
6. When the panel has been made to suit the required finish detail, lay the panel face-down on the workbench and
clean the back of the panel with anti-static solution.
7. Apply the double sided tape per the detail instructions according to the selected jointing method.
Note: Always apply a coating of W165 tape adhesion promoter on the wall where the double sided tape will make
contact.
8. Dust and clean the wall surface, prepare the panel and spread the specified adhesive as below:
8a. After all bends and cuts are made, and the tape is in place, apply the adhesive to the back of the panel, using
the recommended trowel notch.
8b. If using W39 two-part polyurethane adhesive, carefully mix part B into the part A bucket together using a low-
speed mixing drill and paddle for a minimum of 3 minutes, until an even color of the adhesive is reached.
Installation practices 12
Notes 8c. The working time of adhesives is approximately 30 minutes depending on the ambient temperature of the
room. The trowel must be held so that the adhesive is applied to an even finish, and the trowel notches are
replicated to the same depth over the entire panel. Pull the trowel across the width of the panel so all notches run
left to right.
8d. At any points where there may be a gap between the wall and panel, apply additional adhesive. This is
especially true at inside and outside corners.
9. After adhesive has been applied, apply double sided tape as required by the jointing method used. Lift the panel to
the wall and adhere to the required location using the datum line previously applied to the wall. Apply pressure to
the whole panel face to ensure the adhesive has been transferred and will be fully bonded to the substrate. This is
normally done with a wall roller to prevent the surface from being damaged.
10. Failure to ensure a good transfer of adhesive to the substrate could result in the panel debonding.
11. The curing time of the adhesive is dependent on the absorption of substrate, type of adhesive and the ambient
temperature.
3.2 ThermoformerThe thermoformer allows installers to heat and shape Altro Whiterock wall panels to conform to the contours of a room.
This allows the Altro Whiterock wall system to remain seamless around inside and outside corners.
While using the thermoformer, work should be done on an appropriate sized worktable. The table top should be
flush with the height and sides of the thermoformer. This is so the panel can be laid across the heat source while
thermoforming and an even distribution of heat is obtained along the length of the bend line.
Alternatively you may set up a 4’ x 8’ workbench made of a panel of thick plywood on saw horses and set the
thermoformer adjacent on separate metal stands.
Heat element
Insulating stone
Top-down view of Thermoformer
Using the thermoformer
1. Assemble workbench and thermoformer.
2. Plug-in the thermoformer and let it warm up for approximately thirty minutes before beginning thermoforming.
3. Mark the panel at the edge where the bend is to occur, with these pre-established bend lines marked on the face
of the Altro Whiterock panel; center the bend lines over the heat element opening on the thermoformer, heating
from the backside when allowable. You may heat the face of the Altro Whiterock for certain bends being careful to
not touch the panel to the white insulating stone. Remove the tack film from the surface first.
4. Allow sufficient time for the Altro Whiterock panel to heat up until there is a visible softening of the material over the
line where the material is to be thermoformed (about 30 seconds).
5. Immediately move the material from the thermoformer onto the flat worktable.
6. Forming the heated panel can be done in one of two ways:
13 Installation practices
NotesSharper corner edges
This is accomplished by using just enough heat to bend and form the material, approximately 20 to 30 seconds on
the thermoformer, then the material is folded directly to the required corner angle and held to cool (do not bend the
panel all the way in half and then back to the desired angle), cooling takes about 1 minute—Use a ‘T’ style straight
edge to help form this and other bends.
Softer corner edges
This is accomplished by keeping the panel on the thermoformer for longer (30 seconds or more) period of time
and utilizing more heat, the longer (more) heat that is used the farther the heat radiates out from the bend area and
the softer and larger the radius angle (bend) will be when formed; the material can be bent all the way in half when
forming softer corners—hold the panel at the desired angle (bend) until the panel has cooled and becomes rigid.
Use the ‘T’ style straight edge to hold the panel bend in place while cooling.
7. Make any additional bends needed in the material following the same procedure.
8. When measuring for bends, always consider and allow for the thickness of the panel and the adhesive.
3.3 Measuring for bendsAltro recommends using thermoformed internal/external corner detail when installing Altro Whiterock. This is achieved
by heating the panel on the thermoformer and manually forming the panel to the desired angle.
• When possible, always mark on the face of the panels on the protective plastic film
• Always measure on the face of the panels
• Estimate the panel thickness and the adhesive to be approximately ” thick
• Always take three measurements, top, middle and bottom of the corner being wrapped/thermoformed
What size panel do I need?
See mock-up diagram below for an example with measurements.
Measuring with outside cornersUse the widest measurement, then add ” per corner to the total length
of the panel.
Measuring with inside cornersUse the narrowest measurement, then subtract ” per corner from the
total length of the panel.
Measuring with inside and outside
cornersUse the narrowest measurement, do not add or subtract anything.
Notes
Adhesives, tapes and sealants 14
Topics
4.1 Adhesives 15
4.2 Tapes 16
4.3 Sanitary sealant 16
Chapter 4Adhesives, tapes and sealants
Notes
15 Adhesives, tapes and sealants
4.1 AdhesivesAltro W157
Water-based acrylic adhesive is suitable for surfaces in dry, climate controlled areas and may only be used with
absorbent substrates.
Altro W39
Two-part polyurethane adhesive suitable for wet areas, and for all absorbent and non-absorbent surfaces. When in
doubt, use this adhesive.
Adhesive spread rate is approximately 1 gallon of adhesive per 8’ panel when using the 3/16” inch square notch trowel.
Bond test should be performed on all surfaces.
W165 tape adhesion promoter
Apply a coating of W165 on the wall where the double-sided tape will make contact
Substrate Altro W39 Altro W157
Drywall Minimum 1/2" thick A & B A, B, & E
Plywood Minimum 3/8" thick B & G B & G
Metal Required Choice Not Recommended
Ceramic Tiles C Not Recommended
Plaster B & G B & G
Concrete B B
Brickwork B & F B & F
Block-work B & F B & F
Painted D E
(A) All gypsum joint compound needs to be primed with PVA primer.
(B) Very absorbent surfaces must be primed with one coat of a PVA primer.
(C) Provided tiles are firmly bonded to the substrate and free from surface contamination, soap scum, grease etc.
(D) A bond test is advisable to check adhesive does not react with paint.
(E) W157 should not be used for bonding to moisture resistant substrates.
(F) Brickwork and block-work should be of good quality and joints should be flush.
(G) Test for moisture with a GE Protimeter, which should give a maximum reading of 16% WME (wood moisture equivalent).
Recommended trowels
Use only approved adhesives and trowel notches as recommended by Altro. Consult the adhesive label for additional
information. MLN 3/16th trowel notch is recommended for most applications. Other trowel notch sizes based on
substrate conditions. Contact Altro technical for further information.
PRB1/8
1/8 1/8
PRB
For very smooth substrates
CTB12.8
14
14
14
CTB
For very uneven substrates
MLN - 3/16th
Recommended trowel notch for
most applications
Notes
Adhesives, tapes and sealants 16
4.2 Tapes2” double sided tape is used for heat welded seam applications. 1” double sided tape is used for all other applications
(1 part and 2 part joint strip applications).
4.3 Sanitary sealantNote: All terminating edges of Altro Whiterock that are not
being heat welded are to be Chamfered/Beveled on both
front and back edges so as to remove any sharp edges
and to allow the greatest surface area for the application
of Altro Sanitary Sealant.
Description
Altro Whiterock sanitary sealant is a non-toxic, solvent-
free, low modulus, multipurpose, one component sealant.
Altro Whiterock sanitary sealant has a high resistance to
aging, low and high temperatures -58°F to 302°F (-50°C to
+150°C) and is FDA approved.
Altro Whiterock sanitary sealant has been tested and
complies with the relevant paragraphs of code CF21 of
the Food & Drug Association (FDA) approved for use
throughout the food industry and contains an anti-fungal
compound to prevent mold growth in areas of high
humidity.
Application
Altro Whiterock sanitary sealant has been especially
formulated for all types of sanitary applications and rooms
with high humidity such as bathrooms, kitchens, as well as
cold storage cells.
Altro Whiterock sanitary sealant has an adhesive strength
on most dry and clean surfaces.
Processing temperature
Between 40°F and 104°F (+5°C and +40°C).
Surfaces
All surfaces should be dry, clean and free from dust and
grease. Altro recommends all surfaces are primed prior to
application of Sanitary sealant.
Method of use
Use a standard cartridge gun. Maintain a consistent
thickness. Using an appropriate tool, smooth as needed.
Shelf life
Minimum of 12 months if kept in the original package and
stored in cool and dry conditions.
Colors
Altro Whiterock sanitary sealant is available in white as
well as colors that have been formulated to coordinate
with all Altro Whiterock™ and Altro Whiterock Chameleon
hues.
Repairing
Completely remove loose areas and reapply.
Limitations
Do not expose to thermal, mechanical or chemical
influences before complete vulcanization. Good ventilation
is important during application and vulcanization of the
product.
Safety
Please refer to Material Safety Data Sheet (MSDS) below.
UnvulcanizedType of sealant Polysiloxanes
Vulcanize system vulcanizing through air moisture
Skin forming time23oC / 50% R.H.
TRS: 14 minColor: 22 min
Vulcanization rate 23oC / 50% R.H.
1-2mm > 24 hours
Density ( ISO 1183) TRS: 1.02g/mlColor: 1.38 g/ml
VulcanizedShore A hardnessISO 868
TRS: 16Colors: 22
Elastic recoveryISO 7389
> 90%
Deformation capability 25%
Modulus at 100% elongation
TRS: 0.31 N/mm2
Colors: 0.36 N/mm2
Elongation at break ISO 8339
TRS: 320%Colors: 300%
Temperature resistance -50oC /+ 150oC
Notes
17 Jointing methods
Topics
5.1 Heat welding system 18
5.2 Joint strips 20
5.3 Two-part joint strip 20
5.4 One-part joint strip 21
5.5 1” Double-sided tape with joint strips 23
Chapter 5Jointing methods
Notes
Jointing methods 18
5.1 Heat welding systemHeat weld is to be used when a fully hygienic, smooth, seamless installation is required.
Substrates
When installing Altro Whiterock panels with welded joints, it is imperative the substrate is in smooth condition. Surfaces
must be sound, clean, smooth, true, flat, and flush; in particular these conditions MUST be present where the welded
panel joints will be. Recommended substrates include drywall, plywood, finishing plaster and most types of sand &
cement. See section 2.1 Preparation on page 8 for additional substrate recommendations.
Planning layout
When planning the layout of the panels it is important to minimize the number of joints in the wall system. Ensure joints
do not fall too close to corners. We suggest joints should not be formed any closer than 12" from a corner. Consider if
the person doing the heat-welding is a right handed person or a left handed person, as a left hander can get closer to a
left hand corner than a right handed person can and vice versa with a right hander getting closer to a right hand corner
than a left handed person can.
Always apply a coating of W165 tape adhesion promoter on the wall where the tapes will make contact. Altro
recommends Altro W39 adhesive for heat welded installations.
Preparing the joint
Note: Before installing the panels, you must fit the double sided tape to the substrate at the center point where the two
panels will meet so the tape is 1" under each panel.
Panel preparation
Always inspect all panel/seam edges to check and ensure that all edges are straight, clean, smooth, true, and free from
burrs, or edge curl; de-burr, re-cut, or re-plumb/straiten panel seam edges as needed. It is recommended to use factory
edges when possible.
When cutting panels, you will obtain a truer edge if you use a track saw and guide, if using a jigsaw or other cutting
method cut the panels slightly larger than the size required and then use a carpenters hand plane to plane the edge to
size and to obtain a clean and 'crisp' square edge.
Check that there is no loose debris left on the edge of the panel from where it was cut. This debris could burn when heat
welding the joint and will leave a blemish which cannot be removed from the joint.
Heat weld installation and processes
Apply 2” wide double sided tape on the wall so it is centered at the seam (leave the protective paper on the double sided
tape). Once the panels have been prepared and the panel seam edge slightly chamfered/beveled to accept the heat-
weld bead (this chamfered/ beveled edge can be done with either a carpenters block plane and/or our edge scraper) and
the panel dry fitted to check everything is correct, apply the adhesive to the back of the panel, stopping 1” (25mm) short
of the seam edges. See Section 3.1 for details
After the panel is placed on the wall and fit to the datum line and panel seam/joint, carefully ease the edge of the panel
off the wall and remove the protective paper from the double sided tape and re-set panel (save the protective tape
cover). Roll the panel to achieve a transfer of the adhesive to the substrate. When rolling the panel, start in the middle
and work outward. Place the tape cover back on the exposed double sided tape to protect it. Note: Always apply a
coating of W165 tape adhesion promoter on the wall where the tapes will make contact.
Prepare the next panel in the same way as described above (ensure that the seams of the previously installed panel
are clean and free of adhesive). Before fitting this panel you must fit a series of “spacer pins” against the edge of the
previous panel. This is to provide the correct ‘gap spacing’ between each panel. A spacer pin may be a 3D finish nail
(on gypsum board and drywall) or a dime set on edge and being held in place by the double sided tape (on concrete or
cement block) that provides the correct amount of space between each panel. The correct space should be no more
than 1/16th” width.
Fit the next panel as described, ensuring the panel is butted tightly against the spacers. Once the panel has been rolled
almost to the edge, remove the spacer pins and then remove the final part of the double sided tape’s protective cover.
Notes
19 Jointing methods
Press the panel firmly onto the foam tape and then complete the rolling of the panel.
Check that all edges are clean and free of adhesive residue. Once the installation of the panels is complete, you are then
ready to weld the joints.
Heat welding
Clean both the seam area and the weld rod with the anti-static solution. Ensure that the heat welding equipment and in
particular the heat-welding tip is completely clean and free of any debris or carbon buildup.
The heat welding technique used to weld Altro
Whiterock panels is largely similar to that used
with Altro sheet flooring. The same type of tools
and welding equipment should be used.
To determine proper temperature and speed
for heat welding have been satisfied, test weld
on a scrap piece of Altro Whiterock before
proceeding. Do not scorch the panels as this
will be extremely difficult to repair.
Check for completeness of weld by trying to roll the bead left to right after it has been welded.
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Heat-welding system
2” Double
sided foam tape
W165 tape adhesion
promoter
Altro Whiterock
Gap 1/16th”
With a 3d
fi nish nail
AltroFix
adhesive
Substrate
Heat weld joint
Previously
installed panelButting edge
Leading edge
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For technical support please call and speak with our Technical Services department.
Heat-welding system
2” Double
sided foam tape
W165 tape adhesion
promoter
Altro Whiterock
Gap 1/16th”
With a 3d
fi nish nail
AltroFix
adhesive
Substrate
Heat weld joint
Previously
installed panelButting edge
Leading edge
Notes
Jointing methods 20
Trimming off excess weld rod
Allow the weld rod to cool down sufficiently before
trimming. Apply soapy water to panel along weld to help
lubricate the skiving tool. Once the rod has cooled down
you can commence final trimming with your trimming tool.
Take care not to scratch or damage the Altro Whiterock
surface while undertaking this final part of the operation.
The use of a trim plate is optional. Try to accomplish this
in one pass, as multiple passes tend to leave the weld
jagged and increase the risk of scratching the panel.
When heat welding, a small mock up must be done and
inspected for client approval before proceeding with the
entire installation.
5.2 Joint stripsThere are two types of joint strips – a one part strip and a
two part strip.
Joint strips are preferred for use in areas where there
are temperature changes such as kitchens, showers
(the transition of Altro Whiterock panel to floor detail
must always be an overlap of the Altro Whiterock wall
panel over the top of the floor when in wet areas such
as showers), and spa areas. The joint strip gives the
wall panel room to expand and contract due to the
temperature and humidity changes.
One-part joint strips should be used in areas with public
access or controlled areas where people could scratch or
peel off the strips. Two-part joint strips are recommended
for all other installations.
5.3 Two-part joint strip Note: This is the most cost effective and user friendly style of panel joining.
1. Once the panel is adhered to the wall, slide the back
part of the two-part joint strip under the installed
panel. Leave a small gap (about 1/16”/1mm) between
the panel edge and the center part of the channel of
the joint strip (there is a slightly indented line in the
strip to use as a guide). If a transition strip is to be
used to create a horizontal joint between the panel
and the finished flooring, the back part of the vertical
strip should be cut short to allow the horizontal
transition strip to be fitted at the base of the panel.
2. When forming the front cover around horizontal
internal and external corners, the back of the trim
should be carefully undercut to allow the trim to bend
around the angles in one piece.
3. After this procedure has been completed, install the
next Altro Whiterock panel in the sequence. Once all
panels are installed, finish by installing the front cover
section of the two-part joint strip.
4. The front joint strip covers should be initially
positioned by hand pressure. They can then be fully
set in place by tapping with a rubber mallet or a hand
roller.
Main features of Altro Whiterock A831, A832
and A833 joint/transition strips
• A narrower and flatter extrusion than the G-series
one part strip
• Tight finished joints
• User friendly
• Easy installation when used in conjunction with Altro
Safety Flooring
• Easy and quick to repair in the event of damage -
only replace the front cover
Fitting the Two-part joint strip - A831
• Apply first panel of Altro Whiterock to the wall. See
section 6.4 Two-part joint strip on page 28.
• Cut A831 to length as needed.
• Slip A831 backing strip behind edge of panel before
adhesive cures.
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Accessories: joint and transition strips
CODESA831/30 A831/25
Two-part joint strip
A832/25
Two-part cut tile transition strip
A833/30A833/25
Two-part start and edge trim
G831/30G831/25
One-part joint strip
G832/25
One-part cut tile transition strip
G833/30G833/25
One-part start and edge trim
A918/18/01A918/18
Shower trim
A831/30 (10 ft)
A831/25 (8 ft)
Two-part joint strip
A832/25 (8 ft)
Two part cut tile transition strip
7/8" (21.2mm)
1" (23.9mm)
7/8" (21.2mm)
1 1/2" (40mm)
Two-part
One-part
A833/30 (10 ft)
A833/25 (8 ft)
Two-part start and edge trim
1/2" (14.92mm)
1" (23.9mm)
2
G832/25G832/30Cut tiletransition strip
25
30
G833/25G8333/30Heavy duty startand edge trim
2616
7
2
G834/25Resintransitionstrip
50
16G831/25G831/30joint strip
A8332-part startand edge
A8312-part jointstrip
A832Cut tiletransitionstrip
50 30
*A833, A831, A832 are 6.05 in height when locked
*6.05
14.29
23.9
21.2
40
21.2
23.9
2
G832/25G832/30Cut tiletransition strip
25
30
G833/25G8333/30Heavy duty startand edge trim
2616
7
2
G834/25Resintransitionstrip
50
16G831/25G831/30joint strip
A8332-part startand edge
A8312-part jointstrip
A832Cut tiletransitionstrip
50 30
*A833, A831, A832 are 6.05 in height when locked
*6.05
14.29
23.9
21.2
40
21.2
23.9
2
G832/25G832/30Cut tiletransition strip
25
30
G833/25G8333/30Heavy duty startand edge trim
2616
7
2
G834/25Resintransitionstrip
50
16G831/25G831/30joint strip
A8332-part startand edge
A8312-part jointstrip
A832Cut tiletransitionstrip
50 30
*A833, A831, A832 are 6.05 in height when locked
*6.05
14.29
23.9
21.2
40
21.2
23.9
G831/30 (10 ft)
G831/25 (8 ft)
One-part joint strip
G832/25
One-part cut tile
transition strip
G833/30
G833/25
One-part start
and edge trim
12or 18
18 or 23
12or 18
18 or 23
A918/18/01
A918/18
Shower trim
2" (50mm)
1.2" (30mm)
1.2" (30mm)
1" (25mm)
1.02" (26mm)
.63" (16mm)
.08" (2mm)thick
.28" (7mm)thick
.7” (18mm)
.47" (12mm)
or
.9” (23mm)
.7” (18mm)
or
Notes
21 Jointing methods
• Ensure edge of panel is lined up with the marked line
on A831 backing strip.
• Apply second panel.
• Ensure edge of second panel is lined up with marked
line on A831 backing strip.
• Snap front cover of A831 to A831 backing strip.
• Use either a rubber mallet or roller to ensure full
contact between A831 front cover and panel.
Fitting the start and edge profile - A833
Half height, wainscot/dado and vertical stops
• Install panel per digram 6.6 on page 34. Slip A833
backing strip behind edge of panel before adhesive
cures.
• Ensure male barbed front cover of A833 is completely
housed in to the female A833 backing strip.
• Use either a rubber mallet or roller to ensure full
contact between A831 front cover and panel, caulk/
silicone the edge of the start/stop edge cover strip at
the junction of where the cover strip and wall meet.
If in doubt with any part of this installation please contact
the Altro technical services department.
5.4 One-part joint stripInstallation
The process of the one-part joint strip is similar to the
two-part joint strip except that during preparation, a small
bevel will need to be applied to the edges of the panel
where the joint strip is fit onto the panel. This will enable
the one-part joint strip to be fitted more easily to the panel.
The joint strip has a moisture resistant gasket seal on the
inner edges which could be damaged if forced onto the
panel.
1. Bevel the panel edges where the joint strips will
be used. Use an electric or hand file, a small block
plane, or a walls pull scraper to bevel the panel
edges.
2. Fit the joint strip onto the leading edge of the panel.
Tap the joint strip all the way onto the panel.
3. Apply 1” double sided tape and adhesive to the back
of the panel. Remove the protective film from the
double sided tape, and install the panel onto the wall.
Note: Always apply a coating of W165 tape adhesion
promoter on the wall where the tapes will make
contact.
4. Prepare the next panel ensuring that edges are
beveled, install a joint strip to the leading edge of
this panel (tap joint strip all the way into and seated
against the panel).
5. Apply tape and adhesive to this panel and remove
the protective film from the double sided tape.
6. Install the panel that has just been prepared. This
panel is set onto the wall so it overlaps the back leg
of the previous joint strip. Remember use the datum
lines to set the height.
7. Once the panel is rolled tightly to the wall, use a
tapping block or plastic stair tool (chisel) to adjust
the joint strip sideways so it overlaps the two panels
equally (make sure the joint strip is straight and level).
Start at the top and work your way down the strip.
Add lubrication such as soapy water to help adjust
the joint strip in place.
As a summary of the one-part joint strip installation; install
the panels in sequence from left-to-right and fit a joint strip
to the right side of each panel before you place it on the
wall. After two panels are fit to each other, the joint strip
is then tapped over and onto the panel being installed. A
tapping block or plastic stair tool (chisel) must be used to
adjust the joint strip sideways so it overlaps the attached
panels equally.
Notes
Jointing methods 22
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One-part joint strip
CODESG831/30G831/25
One-part joint strip
1. Lay the next panel (prepared
the same way) onto the
exposed back leg of the joint
strip.
One-part joint strip
G831
Bevel Edge
2. Tap the G831 toward the
second panel so the face
overlaps both panels equally.
AltroFix adhesive
AltroFix adhesive
Previously
installed panelButting edge
Leading edge
One-part transition strip - types
Part 1While preparing the first panel, bevel the butting
edge. Attach the one part joint so that it is tight
against the panel edge. Adhere and place on wall.
Use three horizontal rows of 1” double sided tape.
Part 21. Lay the next panel (prepared the same way) onto
the exposed back leg of the joint strip.
2. Tap the G831 toward the second panel so the
face overlaps both panels equally.
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www.altro.com
For technical support please call and speak with our Technical Services department.
Accessories: joint and transition strips
CODESA831/30 A831/25
Two-part joint strip
A832/25
Two-part cut tile transition strip
A833/30A833/25
Two-part start and edge trim
G831/30G831/25
One-part joint strip
G832/25
One-part cut tile transition strip
G833/30G833/25
One-part start and edge trim
A918/18/01A918/18
Shower trim
A831/30 (10 ft)
A831/25 (8 ft)
Two-part joint strip
A832/25 (8 ft)
Two part cut tile transition strip
7/8" (21.2mm)
1" (23.9mm)
7/8" (21.2mm)
1 1/2" (40mm)
Two-part
One-part
A833/30 (10 ft)
A833/25 (8 ft)
Two-part start and edge trim
1/2" (14.92mm)
1" (23.9mm)
2
G832/25G832/30Cut tiletransition strip
25
30
G833/25G8333/30Heavy duty startand edge trim
2616
7
2
G834/25Resintransitionstrip
50
16G831/25G831/30joint strip
A8332-part startand edge
A8312-part jointstrip
A832Cut tiletransitionstrip
50 30
*A833, A831, A832 are 6.05 in height when locked
*6.05
14.29
23.9
21.2
40
21.2
23.9
2
G832/25G832/30Cut tiletransition strip
25
30
G833/25G8333/30Heavy duty startand edge trim
2616
7
2
G834/25Resintransitionstrip
50
16G831/25G831/30joint strip
A8332-part startand edge
A8312-part jointstrip
A832Cut tiletransitionstrip
50 30
*A833, A831, A832 are 6.05 in height when locked
*6.05
14.29
23.9
21.2
40
21.2
23.9
2
G832/25G832/30Cut tiletransition strip
25
30
G833/25G8333/30Heavy duty startand edge trim
2616
7
2
G834/25Resintransitionstrip
50
16G831/25G831/30joint strip
A8332-part startand edge
A8312-part jointstrip
A832Cut tiletransitionstrip
50 30
*A833, A831, A832 are 6.05 in height when locked
*6.05
14.29
23.9
21.2
40
21.2
23.9
G831/30 (10 ft)
G831/25 (8 ft)
One-part joint strip
G832/25
One-part cut tile
transition strip
G833/30
G833/25
One-part start
and edge trim
12or 18
18 or 23
12or 18
18 or 23
A918/18/01
A918/18
Shower trim
2" (50mm)
1.2" (30mm)
1.2" (30mm)
1" (25mm)
1.02" (26mm)
.63" (16mm)
.08" (2mm)thick
.28" (7mm)thick
.7” (18mm)
.47" (12mm)
or
.9” (23mm)
.7” (18mm)
or
Notes
23 Jointing methods
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1” double-sided tape when using joint strips
Tape layout for use with joint transition trims at
fl oor to wall transition
Tape layout for overlap method
Back bevel
top of panel
Bevel front and
back of panel
Three rows
of clear Altro
sanitary
sealant
Position tape 2" from bottom
edge to allow for overlap of Altro
Whiterock onto fl ash-coved
fl ooring
Position tape 1" from bottom
edge to allow for transition strip
Datum
(level line)
Datum
(level line)
Back bevel top
of panels
AltroFix
adhesive
AltroFix
adhesive
Position tape 1/16”
down from top edge
Position tape 1/16”
down from top edge
1"Double
sided tape
1"Double
sided tape
Place middle
row of tape
just
below datum
line
Place middle
row of tape just
below datum line
5.5 1” Double-sided tape with joint strips
Notes
Floor - to - wall transitions 24
Chapter 6Floor-to-wall transitions
Topics
6.1 Floor to wall overlap transition 25
6.2 Floor to wall heat welded transition 26
6.3 Installation over epoxy 27
6.4 Two-part joint strip 28
6.5 Connecting to flash cove with a two-part joint strip 28
6.6 One-part concealed transition trim 29
6.7 Fitting to quarry tile base 32
Notes
25 Floor - to - wall transitions
6.1 Floor to wall overlap transitionPreferred method
When using heat-weld panel seam finishing an overlap of the wall panel to floor detail is preferred. The overlap detail is
the preferred wall panel to floor detail transition, particularity for wet areas such as showers.
Altro Whiterock wall system overlapping self-coved Altro flooring, fixed with the appropriate AltroFix adhesive, sealed
with Altro sanitary sealant at the overlap junction. Clear sanitary sealant to bottom of panel.
An overlap transition from floor to wall is our preferred installation method and is utilized in most installations. It is
completed by installing the flooring 6” – 8” up the wall, dependent on cove size and installing the Altro Whiterock with a
2” overlap. The juncture is then finished with Altro Whiterock Sanitary Sealant.
This installation technique is easier to install versus a heat welded transition and offers enhanced security over water
ingress.
Installations that may require a heat welded transition could be; pharmaceuticals, clean rooms, ISO compliant
laboratories.
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For technical support please call and speak with our Technical Services department.
800 377 5597 USA / 800 565 4658 CAN support@altrofl oors.com
www.altro.com
For technical support please call and speak with our Technical Services department.
Floor to wall overlap transitionAn overlap transition from fl oor to wall is our preferred installation method and is utilized in most installations. It is completed by installing the fl ooring 6” – 8” up the wall, dependent on cove size and installing the Altro Whiterock with a 2” overlap. The juncture is then fi nished with Altro sanitary sealant.
This installation technique is easier to install versus a heat-welded transition and offers enhanced security over water ingress.
Altro sanitary sealant
2” Overlap
4”-6”
2”
Altro sheet flooring
Cove former
Altro Whiterock2.5mm
PREFERRED METHOD
Sanitary sealant
Chamfer/bevel edge
Note: All terminating edges of Altro Whiterock that are not
being heat welded are to be Chamfered/Beveled on both
front and back edges so as to remove any sharp edges
and to allow the greatest surface area for the application
of Altro Sanitary sealant.
Notes
Floor - to - wall transitions 26
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www.altro.com
For technical support please call and speak with our Technical Services department.
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www.altro.com
For technical support please call and speak with our Technical Services department.
Floor to wall heat-welded transitionThe key to proper welding at this fl oor to wall panel
juncture is to have both the wall panel and the
fl ooring fl ush with each other. This includes having
a solid backing behind the panel and the fl oor –
accomplished by using Altro’s WSBU 200 vinyl
backer.
This advanced method is for use in extremely
hygienic environments and should not be attempted
without contacting Altro technical services.
Typical applications
• Pharmaceuticals
• Clean rooms
• ISO compliant laboratories
• Operating rooms• Hygienic critical areas
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WSBU 200PVCuINFILL
Grooved & Heat Welded Joint
Altro sheet flooring
Altro Whiterock2.5mm
Cove former
Altr
ofix
adhe
sive
ADVANCED INSTALLERS ONLY
6.2 Floor to wall heat welded transitionAdvanced method - installers should consult technical services before attempting
The key to proper welding at this floor to wall panel juncture is to have both the wall panel and the flooring flush with
each other. This includes having a solid backing behind the panel and the floor – accomplished by using Altro’s WSBU
200 vinyl backer.
This advanced method is for use in extremely hygienic environments and should not be attempted without contacting
Altro technical services.
Typical applications
• Pharmaceuticals
• Clean rooms
• ISO compliant laboratories
27 Floor - to - wall transitions
6.3 Installation over epoxy
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Altro Whiterock with epoxy flooring
4”- 6”epoxy/resinous
flooring create self cove with epoxy
soundduoos dduuooos dnuosubstrateatssu etaartsbbuuu etabbs bAltro Whiterock
subflooob ooobuus fluusssubfloorubflooob ooflfl roooobbu roooflbb rb
Altro sanitary sealant at overlap of panel and epoxy
(color matched to panels or clear) Epoxy tapers to nothing up wall.(Will be covered by panel)
Note: All terminating edges of Altro Whiterock that are not
being heat welded are to be Chamfered/Beveled on both
front and back edges so as to remove any sharp edges
and to allow the greatest surface area for the application
of Altro Sanitary sealant.
Sanitary sealant
Chamfer/bevel edge
Notes
Floor - to - wall transitions 28
6.5 Connecting to flash cove with a two-part joint stripAltro Whiterock hygienic wall system 2.5mm (.10”) thick is installed over most sound, dry substrates, with the
appropriate Altro™ adhesive. Altro flooring (2mm, 2.5mm, 3mm or 4mm) flash-coved over cove former.
6.4 Two-part joint stripTwo-Part floor to wall transition strip, the transition strip is fitted to connect a panel to the flooring. As described previously,
the vertical joint strips are cut shorter than the full panel length. To find the correct length of the vertical section required, use a
small piece of transition strip (as a template) and fit this to the bottom of the panel. Then measure the length of the vertical joint
strip required and fit.
Fitting the cut tile transition strip - A832
• Cut A832 backing strip to size and slip behind the back of the installed
panel.
• Cut and form A832 front cover strip allowing for internal and external
radius bends.
• Snap A832 front cover into position ensuring male barbed front cover is
completely housed into the female A832 backing strip.
• Use either a rubber mallet or roller to ensure full contact between A832
front cover and floor covering.
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www.altro.com
For technical support please call and speak with our Technical Services department.
Connecting to a flash cove with a two-part cut tile transition stripAltro Whiterock hygienic wall system 2.5mm (.10”) thick is installed over most sound, dry substrates, with the appropriate adhesive.
Altro fl ooring (2mm, 2.5mm, 3mm or 4mm) fl ash-coved over cove former.
CODESA832/25 (8ft)
Two-part cut tile transition strip
AltroFix
adhesive Substrate
W165 Tape
Adhesion promoter
and A815 double
sided tape
Two-part cut tile
transition strip
A832/25
Min. 4”
(100mm)
self cove
Cove
former
Altro Whiterock
Clear Altro sanitary sealant
Altro safety fl ooring
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Accessories: joint and transition strips
CODESA831/30 A831/25
Two-part joint strip
A832/25
Two-part cut tile transition strip
A833/30A833/25
Two-part start and edge trim
G831/30G831/25
One-part joint strip
G832/25
One-part cut tile transition strip
G833/30G833/25
One-part start and edge trim
A918/18/01A918/18
Shower trim
A831/30 (10 ft)
A831/25 (8 ft)
Two-part joint strip
A832/25 (8 ft)
Two part cut tile transition strip
7/8" (21.2mm)
1" (23.9mm)
7/8" (21.2mm)
1 1/2" (40mm)
Two-part
One-part
A833/30 (10 ft)
A833/25 (8 ft)
Two-part start and edge trim
1/2" (14.92mm)
1" (23.9mm)
2
G832/25G832/30Cut tiletransition strip
25
30
G833/25G8333/30Heavy duty startand edge trim
2616
7
2
G834/25Resintransitionstrip
50
16G831/25G831/30joint strip
A8332-part startand edge
A8312-part jointstrip
A832Cut tiletransitionstrip
50 30
*A833, A831, A832 are 6.05 in height when locked
*6.05
14.29
23.9
21.2
40
21.2
23.9
2
G832/25G832/30Cut tiletransition strip
25
30
G833/25G8333/30Heavy duty startand edge trim
2616
7
2
G834/25Resintransitionstrip
50
16G831/25G831/30joint strip
A8332-part startand edge
A8312-part jointstrip
A832Cut tiletransitionstrip
50 30
*A833, A831, A832 are 6.05 in height when locked
*6.05
14.29
23.9
21.2
40
21.2
23.9
2
G832/25G832/30Cut tiletransition strip
25
30
G833/25G8333/30Heavy duty startand edge trim
2616
7
2
G834/25Resintransitionstrip
50
16G831/25G831/30joint strip
A8332-part startand edge
A8312-part jointstrip
A832Cut tiletransitionstrip
50 30
*A833, A831, A832 are 6.05 in height when locked
*6.05
14.29
23.9
21.2
40
21.2
23.9
G831/30 (10 ft)
G831/25 (8 ft)
One-part joint strip
G832/25
One-part cut tile
transition strip
G833/30
G833/25
One-part start
and edge trim
12or 18
18 or 23
12or 18
18 or 23
A918/18/01
A918/18
Shower trim
2" (50mm)
1.2" (30mm)
1.2" (30mm)
1" (25mm)
1.02" (26mm)
.63" (16mm)
.08" (2mm)thick
.28" (7mm)thick
.7” (18mm)
.47" (12mm)
or
.9” (23mm)
.7” (18mm)
or
Notes
29 Floor - to - wall transitions
6.6 One-part concealed transition trimThere are two methods of installing, one is to install the G835 trim to the back of the Altro Whiterock panels, and the
other method is to install the trim to the substrate, Altro prefers the application of the G835 to the wall substrate.
The G835 can be adhered by use of a little Altro Whiterock wall panel adhesive, W165 tape adhesion promoter, silicone
or mechanically fixing.
If installing the trim around the wall/substrate put a datum on the wall for the panel as per normal and then measure
down and install another line which will be the bottom (or could also be the top) of the G835 trim. Install the bottom line
so when the panel has been installed the bottom of the panel overlaps the bottom of the trim by around an inch.
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One-part concealed transition strip
CODESG835 / 25
One-part concealed transition strip
A803
Altro sanitary sealant
G832 / 25
Two-part cut tile transition strip
Double sided tape ref
A815
Clear Altro sanitary sealant
A803
38mm radius
38mm cove former
G835/25 One-part
concealed wall / fl oor
transition strip mechanically
fi xed or bonded to the wall
with AP600 adhesive
Altro Whiterock bonded to wall
and G832 / 25 One-part cut tile
transition strip with AP600
Standard 20mm overlap 50mm
overlap in showers
100mm visual skirting
G835 transition strip
Altro sheet vinyl
AltroFix Adhesive
W139 or W137
Altro Whiterock
Notes
Floor - to - wall transitions 30
2. This photograph is shown applying a spread of
adhesive to the substrate, by hooking the notch of the
trowel against the small up-stand the trowel runs along
as if on a guide and the adhesive gives an even spread.
If not done, the adhesive spread to the back of the panel
may not bridge the gap produced by the trim.
3. The preferred reason for applying the G835 to the
wall/substrate is the trim continues without breaks. If the
trim is applied to the back of the panel, the trim must
overhang the width of the panel by at least 3/8 of an
inch. If used in conjunction with the two part trim, the
overhang provides support for the back-plate of the two
part trim, failure to do this and the back-plate sinks to
far from the panel and the front face of the trim becomes
difficult to engage to provide a watertight detail.
4. This shows the trim having been installed onto the
panel back and overlapping the panel edge.
1. This picture shows how the trim looks if installed on
the wall. The holes in the trim are there so the adhesive
bonds the trim to the substrate, and creates a sandwich
approach with the trim in the middle.
Concealed transition trim G835 installation steps
There are two methods of installing, one is to install the G835 trim to the back of the Altro Whiterock panels, and the
other method is to install the trim to the substrate, Altro prefers the application of the G835 to the wall substrate.
The photos on the next few pages should provide some clarification. The reason for the G835 concealed transition trim
is to allow the Altro Whiterock to be installed firstly and to provide a clearance gap to the back of the panel where the
vinyl can be inserted, this then allows the wall panels to be installed firstly and the floor tucked up behind the panel
secondly.
Notes
31 Floor - to - wall transitions
5. This shows the two part backer strip installed and
supported, and the vinyl installed.
6. This shows this detail as seen from the back of the
panel.
8. This photograph shows the trim applied to the panel
and shows the depth of the adhesive near the trim being
deeper.
7. If installing to the back of the panel, the trim must be
kept ½ short of the corners, and make an allowance of
around 1/8 inch as the trim will push the bottom of the
panel out in some instances.
The G835 trim can also be used with the heat-weld joint method as well as flexijoint, and aside from the main purpose
of the G835 allowing the wall panels to be installed before the flooring is installed and still allowing for the flooring to be
installed tucked up and behind the wall panels is that the wall panels have a twenty year warranty and more often than
not the flooring wears out before the wall panels are replaced.
This G835 concealed transition strip will aid in and allow for the easier re-installation of flooring with less likelihood of
damaging the wall panels if the traditional overlap joint (shower rooms) has been used and the wall panels have been
bonded to the flooring. We have also found that many architects and general contractors prefer the walling contractors in
first, as they do not want the flooring damaged when machinery is installed.
Notes
Floor - to - wall transitions 32
6.7 Fitting to quarry tile base
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Fitting to a quarry tile base
AltroFix
adhesive
Substrate
Back
Bevel Panel
Quarry Tile Skirting
(typical 4” (100mm)
by 3/8” (12mm) thick)
Altro Whiterock
Quarry tile fl oor
Joint sealed with Altro sanitary sealant
Note: All terminating edges of Altro Whiterock that are not
being heat welded are to be Chamfered/Beveled on both
front and back edges so as to remove any sharp edges
and to allow the greatest surface area for the application
of Altro Sanitary sealant.
Sanitary sealant
Chamfer/bevel edge
Notes
33 Additional details and maintenance
Chapter 7Additional details and maintenance
Topics
7.1 Wainscot installation 34
7.2 Door, window and pipe installation 34
7.3 Installation over ceramic tile 35
7.4 Terminating Altro Whiterock at true ceiling wall intersection 35
7.5 Terminating Altro Whiterock at drop ceiling grid 36
7.6 Terminating Altro Whiterock above a drop ceiling grid 36
7.7 Adhering directly to the ceiling using heat welding method 37
7.8 Adhering directly to the ceiling using two part joint strip method 38
7.9 Altro Whiterock maintenance 39
Notes
Additional details and maintenance 34
7.1 Wainscot installationThere are a number of ways to mount Altro Whiterock in a
half height/wainscot/dado installation.
First, determine the style of finish you require for the
top edge of the panels. This may be a beveled panel
edge detail filled at the panel to wall abutment with Altro
sanitary sealant, or it may be accomplished using a start
and stop edge trim.
A) Installing the panels flush with the substrate
without the use of edging
Bevel the panels top edge with a router, edge scraper or
block plane so there is a 45 degree angle back towards
the wall. After installation, apply painter’s tape to the wall
about 1/16” above the top of the panel. This will make
sealant application uniform and easier to clean up. Apply
a bead of sealant at the top and smooth. Remove tape
immediately after. Alternatively, the panels exposed edge
can be slightly chamfered/beveled on both its outside
and inside and then sealed with Altro sanitary sealant, this
makes the least obtrusive edge finish.
B) Use of the Altro Whiterock start & edge trim
The part number is A833/25/xx, where 25 stands for 8 ft
lengths (only) and xx is where the color selection goes.
This installs similar to our A831 two-part connector strips;
install the panel and then slide the backer behind the
panel.
For heat welded panel joints
Apply 2” double sided tape using one row on the wall at
the seam area. You also need to place an additional row
of tape vertically near the midpoint of the panel. Stop the
tape 1” below the top of the panel to allow the backer
to slide in back. Always use our W165 tape adhesion
promoter (A816) at the locations where the tape will
contact the wall. Apply the chosen adhesive within 1/8” of
the top and bottom of the panel and 1” in from the edges.
If you are using the overlap method at the bottom of the
panel, hold the adhesive back the distance that the panel
will overlap the flooring/base material, then use our A803
Translucent Sealant at that overlap area.
For two-part joint connectors
Apply TWO adjacent rows of 1” double sided tape (A815)
horizontally about 12” down from the top, stopping 1” in
from the seam edge. However, if you are using the overlap
method, use ONE row horizontally down about 12” from
the top, then apply the other so it contacts the wall just
above the flooring/base material. Always use our W165
tape adhesion promoter (A816) at the locations where the
tape will contact the wall. Apply the selected adhesive per
a normal two-part installation.
7.2 Door, window and pipe installationAltro Whiterock hygienic wall system sealed to door frame.
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Door frame, window frame and pipe detail Altro Whiterock hygienic wall system sealed to door frame.
Substrate
DoorDoor Lining
Door/Window Casing
(complete with fi nish
coat prior to installation
of Altro Whiterock)
1/16” (2mm)
Altro sanitary sealant to
match panel color
Altro Whiterock
Back Bevel
Panel Edge
AltroFix
adhesive
Sanitary sealant
Chamfer/bevel edgeNote: All terminating edges
of Altro Whiterock that are
not being heat welded are
to be Chamfered/Beveled
on both front and back
edges so as to remove any
sharp edges and to allow
the greatest surface area
for the application of Altro
Sanitary sealant.
Notes
35 Additional details and maintenance
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true ceilingtermination
drop ceiling level
bevel on back of top panel
Altro Whiterock
Altroadhesive
drop ceiling griddrop ceiling panels & grid
drywall
soundsubstrate
Altro sanitary sealant(color matched to panels or clear)
drywall
Terminating Altro Whiterock™ at drop ceiling gridAltro Whiterock installed over drywall using AltroFix W39 adhesive, terminating at drop ceiling grid and sealed with
Altro sanitary sealant at top of panel.
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Installation over ceramic tile Altro Whiterock hygienic wall system installed over sound, well-adhered, ceramic wall tiles (with plywood infi lls, if needed) using Altro W39 adhesive
and sealed with Altro sanitary sealant.
Altro sanitary sealant to
match panel colorCeiling
Substrate
2” double sided
foam tape
Plywood infi ll
if needed
Altro W39
adhesive
Sound, well-fi xed,
ceramic wall tiles
Altro Whiterock
7.3 Installation over ceramic tileAltro Whiterock hygienic wall system
installed over sound, well-adhered,
ceramic wall tiles (with plywood infills, if
needed) using Altro W39 adhesives and
sealed with Altro sanitary sealant.
Note: All terminating edges of Altro
Whiterock that are not being heat welded
are to be Chamfered/Beveled on both front
and back edges so as to remove any sharp
edges and to allow the greatest surface
area for the application of Altro Sanitary
sealant.
7.4 Terminating Altro Whiterock at true ceiling wall intersectionAltro Whiterock installed over drywall using Altro W39 adhesive, terminating at true ceiling and sealed with Altro
Whiterock sanitary sealant at top of panel.
Sanitary sealant
Chamfer/bevel edge
Notes
Additional details and maintenance 36
7.5 Terminating Altro Whiterock at drop ceiling gridAltro Whiterock installed over drywall using Altro W39 adhesive, terminating at drop ceiling grid and sealed with
Altro Whiterock sanitary sealant at top of panel.
7.6 Terminating Altro Whiterock above a drop ceiling gridAltro Whiterock installed over drywall using Altro W39 adhesive and continuing through drop ceiling grid level.
When this installation occurs the ceiling grid must be installed to allow for expansion and contraction. of the wall panel.
This can be achieved by first making a pilot hole slightly larger that the fastener through the panel and then fastening the
ceiling grid to the substrate.
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Altro Whiterock
Altroadhesive
drywall
soundsubstrate
drop ceiling grid
Altro sanitary sealant(color matched to panels or clear)
true ceilingtermination
drop ceiling level
drop ceiling panels & grid
Terminating Altro Whiterock™ abovea drop ceiling grid
Altro Whiterock installed over drywall using
AltroFix W39 adhesive and continuing
through drop ceiling grid level.
When this installation occurs the ceiling grid must be installed to allow for expansion and contraction of the wall panel.
This can be achieved by fi rst making a pilot hole slightly larger that the fastener through the panel and then fastening the ceiling grid to the substrate.
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true ceilingtermination
drop ceiling level
bevel on back of top panel
Altro Whiterock
Altroadhesive
drop ceiling griddrop ceiling panels & grid
drywall
soundsubstrate
Altro sanitary sealant(color matched to panels or clear)
drywall
Terminating Altro Whiterock™ at drop ceiling gridAltro Whiterock installed over drywall using AltroFix W39 adhesive, terminating at drop ceiling grid and sealed with
Altro sanitary sealant at top of panel.
Sanitary sealant
Chamfer/bevel edge
Note: All terminating edges of Altro
Whiterock that are not being heat
welded are to be Chamfered/Beveled
on both front and back edges so as to
remove any sharp edges and to allow the
greatest surface area for the application
of Altro Sanitary sealant.
Notes
37 Additional details and maintenance
7.7 Adhering directly to the ceiling using heat welding methodAltro Whiterock installed on smooth ceiling substrates with Altro W39 two-part polyurethane adhesive and 2” double
faced tape. Cover back of panel with a placement as shown in diagram. Fill in the empty space with appropriate Altro
W39 two-part polyurethane adhesive. You may need to support the panels until the adhesive sets. Apply W165 tape
adhesive to ceiling to match tape pattern of panel.
Follow appropriate instructions for heat-weld method. See section 5.1 Heat welding system on page 18.
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Adhering directly to the ceiling using heat welding method
2” double faced tape
down center of panel
2” double faced tape around
perimeter of panel. Allow width
of tape to overhang 1” so the
adjacent panels can also adhere
to this piece of tape.
Altro W39 two-part
polyurethane adhesive on
panel. Keep perimeter clear
for the 2” double faced
tape that is on the ceiling
substrate.
Altro Whiterock panel edge
Ceiling substrateAltro Whiterock panel
Place 2” double faced
tape on ceiling substrate
to mimic perimeter of
Altro Whiterock panel.
Panel layout is optional.
Altro Whiterock installed on smooth ceiling substrates with Altro W39 two-part polyurethane adhesive and 2” double faced tape.
1. Cover back of panel with a placement as shown in diagram.
2. Fill in the empty space with appropriate Altro W39 two-part polyurethane adhesive. You may need to support the panels until the adhesive sets.
3. Apply Altro W165 tape adhesion promoter to ceiling to match tape pattern of panel.
4. Follow appropriate instructions for heat-weld method.
2” double-faced tape.
Altro W39 adhesive
Notes
Additional details and maintenance 38
7.8 Adhering directly to the ceiling using two part joint strip methodAltro Whiterock installed on smooth ceiling substrates with Altro W39 two-part polyurethane adhesive and 2” double faced tape.
Cover back of panel with a placement as shown in diagram. Fill in the empty space with appropriate Altro W39 two-part
polyurethane adhesive. You may need to support the panels until the adhesive sets. Apply W165 tape adhesive to ceiling
to match tape pattern of panel.
Follow appropriate instructions for two-part joint strip installation. See section 5.3 Two-part joint strip on page 20.
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Adhering directly to the ceiling using two part joint strip method Altro Whiterock installed on smooth ceiling substrates with Altro W39 two-part polyurethane adhesive and 2” double faced tape. Cover back of panel with a placement as shown in diagram. Fill in the empty space with appropriate
Altro W39 two-part polyurethane adhesive. You may need to support the panels until the adhesive
sets. Apply Altro W165 tape adhesion promoter to ceiling to match tape pattern of panel.
Follow appropriate instructions for two-part joint strip installation.
2" double faced tape shown in gray
All voids within the tape grid
fi lled with Altro W39 two-part
polyurethane adhesive
Notes
39 Additional details and maintenance
7.9 Altro Whiterock maintenanceInitial cleaning
Once all panels and joints are installed, remove the protective film and clean all surfaces down with an antistatic solution,
or anti-static wipes. This is required as the panel may have static build up, and any dust in the atmosphere will adhere to
the surface of the panel. Continue with regular maintenance as described below.
Regular maintenance
• Altro Whiterock can be cleaned with a diluted soap/detergent solution, such as PVC wall cleaner (for stubborn
stains) or AltroClean 44 (degreaser).
• Use a lint-free, non-woven wipe or a polyester knit wipe. Both are extremely low in particle generation.
• When cleaning Altro Whiterock, we recommend the temperature of water does not exceed 140˚F (60˚C).
• Pressure cleaning with hot water may be used with the pressure nozzle, a minimum of 2 feet (600mm) away from
the surface.
• To reduce the build-up of static, cleaning the panels with an anti-static solution or anti-static wipes is
recommended.
• Some cleaning agents may adversely affect Altro Whiterock. See Altro’s chemical resistance chart for reactions to
common chemicals at www.altro.com/techdocs.
Maintenance products available to purchase
P/N: ALW A859/325
Altro Whiterock PVC Cleaner
P/N: ASF 44 Cleaner
Altro Clean 44 - 5 Liters
1.3 Gallons
P/N: ALW A809/05
Anti-Static Solution
5 Liters
P/N: ALW A809
Anti-Static Solution in spray bottle
500ml
Notes
Additional details and maintenance 40
Altro Whiterock Installation guide
Introduction to Altro Whiterock™
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www.altro.com
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