FEATURING PLYWOOD IN BUILDINGS

Plywood Used in So Many Different Ways

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Table of Contents

Introduction ........................................................................................................ 3

Plywood Characteristics ...................................................................................... 3 Cross Laminated Two Way Strength and Stability ......................................................... 3 Face Quality ................................................................................................................... 4 Quality Guaranteed........................................................................................................ 4 When you specify plywood be sure it has the PAA certification mark .......................... 5 Glue Bond....................................................................................................................... 6 Curving Plywood ............................................................................................................ 7 Acoustics and Sound Insulation ..................................................................................... 7 Thermal Performance .................................................................................................... 8 Lightweight panels ......................................................................................................... 9 Fire Hazard Properties ................................................................................................... 9 Floor Material And Coverings ........................................................................................ 9 Wall and Ceiling Linings ............................................................................................... 10 Other Materials ............................................................................................................ 10 Energy Costs of Construction ....................................................................................... 10

Plywood Exterior Cladding ................................................................................ 11 Durability Requirements .............................................................................................. 11 Installation ................................................................................................................... 12 Bracing Resistance of Plywood Exterior Cladding ........................................................ 13 Typical Joint Details for Plywood Exterior Cladding..................................................... 14 Finishing ....................................................................................................................... 15

Plywood Interior Wall & Ceiling Lining ............................................................. 17 Plywood Specification .................................................................................................. 17 Installation ................................................................................................................... 17 Plywood Thickness and Support Spacing’s .................................................................. 18 Bracing Resistance of Plywood Wall Lining .................................................................. 19 Finishing ....................................................................................................................... 19

Lightweight Roofing System .............................................................................. 20 Plywood Specification .................................................................................................. 20 Roofing Overlay ............................................................................................................ 20 Installation ................................................................................................................... 20

Revision History ................................................................................................. 22

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Introduction Plywood products are part of a quiet revolution occurring in residential and light commercial building practices. With low costs, good looks and superior structural performance real wood plywood products are being used creatively as exterior cladding, decorative flooring, interior wall and ceiling linings, and as a lightweight, but strong roofing substrate. This brochure provides guidance on the use of plywood cladding, lining and roofing. For flooring, and applications such as bracing and box beams, please refer to the relevant EWPAA publications, available from the EWPAA Web Site.

Plywood Characteristics Apart from the style and warmth of real timber, plywood has many added advantages

Cross laminated strength - resists impact and edge damage

Choice of face veneer to suit application

Guaranteed quality and safety of EWPAA branded plywood

Durable glue bond

Can be bent to form curved finishes

Good acoustic properties

Efficient thermal performance

Known fire hazard properties

Low energy costs of manufacture

Lightweight and easy to install

Cross Laminated Two Way Strength and Stability Plywood is assembled from timber veneers so it has most of the characteristics of solid timber. However as a result of plywood’s cross laminated construction, i.e. rigidly gluing alternate veneers at right angles, timber’s tendency to split along the grain is overcome, plywood has excellent impact and damage resistance, and is exceptionally dimensionally stable when used in applications subject to significant variation in humidity. Plywood can be worked with normal timber working tools. Additionally, plywood can be fixed close to panel edges, (7mm for 7mm plywood, and 10-12 for thicker plywoods).

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Face Quality Plywood can be ordered with face veneers to suit the application. Veneer quality A is a high quality appearance grade suitable for clear finishing. Veneer quality S defines an appearance grade which permits natural characteristics such as knots as a decorative feature. Veneer quality B is an appearance grade suitable for high quality paint finishing. Veneer quality C is a non-appearance grade with a sanded solid surface i.e. all open defects are filled. Finally veneer quality D can have open defects and would normally be used as a back veneer on a plywood panel. Thus for a clear finished aesthetic application requiring one viewed surface AD grade plywood would be specified. Under similar circumstances if a painted finish is required then a minimum of BD grade is the specification. A choice of timber species other than pine for outer veneers is also available.

Quality Guaranteed For guaranteed compliance and reliability specify that the plywood used must be branded with the appropriate EWPAA product certification stamp. This stamp certifies the product has been manufactured under a formalised process based quality control program and is therefore fit for use as described in this literature.

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When you specify plywood be sure it has the PAA certification mark

The EWPAA has been accredited by the Joint Accreditation System of Australia and New Zealand (JAS-ANZ), the peak accreditation body in both countries established by government treaty, as a product certification body for plywood and other glued structural veneer products. Plywood cladding, lining and roofing manufactured under the EWPAA quality brand stamp assures product conformance to the relevant product standard.

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Glue Bond Structural plywood manufactured to AS/NZS 2269 has a permanent Type A phenolic bond which is distinctively dark in colour. Exterior plywood to AS/NZS 2271 can be ordered with the Type A bond. Phenolic bonds are generally ‘cross linked polymer chains’ made from measured amounts of phenol and formaldehyde. Once formed and cured these polymers are new chemical entities, and are extremely stable and do not break down into phenol and formaldehyde. These A bonds do not deteriorate under wet conditions, hot or cold, thus are suitable for long term permanent exposure. The plywood however may need to be preservative treated, when exposed to the weather or used in damp conditions, to prevent fungal attack to the wood. Marine plywood is manufactured with the same permanent Type A bond. Apart from making an excellent durable glue bond for wood products, plywood products bonded with phenolic bonds have formaldehyde emissions of 0.00 – 0.03ppm, well below the internationally accepted recommended E1 emission level of 0.1ppm. These values were established on large scale chamber tests carried out by the American Plywood Association and Hardwood Plywood Manufactures Association in USA, and verified in Australia on locally produced plywood. The Type B bond is an alternative bond used in exterior plywood to AS/NZS2271 and is achieved using melamine fortified urea formaldehyde adhesive which is light in colour. This adhesive is semi durable and can only be used in semi exposed conditions such as exterior door skins. This bond should not be specified if ambient conditions exceed 50oC or 18% moisture content. The Type C and D bonds used in interior plywood to AS/NZS 2270 are formed using light coloured urea formaldehyde adhesive, the Type C being more concentrated to meet the requirements of humid applications. These bonds are not durable in exposed conditions or conditions of moisture and/or high temperature. However, if used in the correct dry interior environment such as a non-structural interior panelling, tests have proven the modern resins used for the bonds are durable, and can provide plywoods that meet the E1 formaldehyde emission requirements.

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Curving Plywood Plywood can be safely curved for applications such as ceilings and feature walls. Table one provides guidance for the minimum recommended radii. Two factors should be considered before selecting the plywood thickness. Firstly, the amount of force and hence the increased fixings that are required to pull and hold the panel in tight radius; thicker panels require considerable force particularly in thickness above 12mm. secondly, with tighter radii the change of radii between the ends of each sheet (which tend to be straighter) and the balance of the panel becomes more visually obvious. Therefore for tighter radii it is best to use thinner plywoods and closer supports. Table 1 : Recommended minimum bending radii for plywood linings

Normal Thickness

(mm)

Along face (m)

Across face (m)

4.5 1.1 0.6

7 1.8 1.0

9 2.3 1.3

12 3.6 2.4

15 4.6 3.0

17 6.0 4.4

Acoustics and Sound Insulation Plywood is an excellent reflector of sound, an acoustic property put to good use in applications such as the internal lining of the Sydney Opera House. Alternatively, perforated plywood with sound insulation behind can act as a sound absorbing lining. The most important factor determining the ability of a wall system or lining to absorb transmitted sound is its mass per surface area. There is no such thing as an ultra-lightweight, high efficiency acoustic partition. However a double-sided plywood partition reduces the level of noise transmitted by around 35 decibels. To achieve higher levels with timber framing requires staggered or double stud wall systems fitted with sound insulation. Another option is the inclusion of lead sheet in the wall system.

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Thermal Performance The real advantage of lightweight timber construction in a subtropical or tropical climate is the ability to provide very liveable buildings with wall systems having low thermal mass. Thus in the cool of the evening following a hot day the wall will cool rapidly and not keep heating the interior. Walls with high thermal mass hold substantially more heat thus continue to radiate heat in the evening. In cooler climates, or if the building is to be air conditioned, the addition of insulation to the timber structure can provide equivalent thermal insulation to solid construction. For example the addition of R1.5 batts into a plywood clad with reflective sisalation on 90mm studs will result in a wall with an average R exceeding 2.2 (see table 2). Therefore, in winter a lightweight timber can be a very effective insulator and keep the warmth inside the building.

Table 2 : Thermal resistance of timber framed plywood clad walls

Note: As a non-reflective 20mm air gap has an R value of 0.15, an insulation wall system without sisalation would reduce the total r value from 2.36 to 1.93 in the above table.

R Value (m2 o

c/Watt

Through Insulation

Zone

Through Stud

Outdoor air film 0.04 0.04

12mm Plywood Cladding 0.08 0.08

20mm reflective air gap 0.58

R1.5 Insulation 1.50

90mm Stud 0.62

6mm Plywood Lining 0.04 0.04

Indoor Air film 0.12 0.12

TOTAL R VALUE 2.36 0.90

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Lightweight panels

Plywood is strong enough to do the job but still light enough to be installed by one person, saving time and money. The density of pine plywood is around 590kg/m3, thus a 2400 x 1200 x 12mm plywood panel weighs approximately 20kg. Hardwood plywood may be up to 40% more dense than pine plywood.

Fire Hazard Properties The Building Code of Australia (BCA) is a uniform set of technical provisions for the design and construction of buildings and other structures throughout Australia. The BCA includes a section on Fire Resistance, and designers and builders must ensure that their constructions satisfy this section. There are 3 categories for plywood used in constructions : 1. Floor Materials and Coverings 2. Wall and Ceiling Linings 3. Other materials.

The following tables list the properties for each of these types. For more information, you can download the “EWPAA Fire Resistance” fact sheet from the EWPAA Web Site.

Floor Material And Coverings

Species Thickness CRF Smoke Development

Rate

Pine, Hoop – Araucaria cunninghamii 15mm or greater Between 2.2 and 4.5

Less than 750 percent-minutes

Pine, Radiata – Pinus Radiata 17mm or greater

Pine, Slash – Pinus Elliottii 17mm or greater

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Wall and Ceiling Linings

Plywood Species

Minimum Thickness (mm)

Group No.

Average Specific Extinction Area

(m2/kg)

Pine, Radiata – Pinus Radiata 6mm or greater 3 < 250

Lauan – Shorea agsaboensis 6mm or greater 3 < 250

Pine, Hoop 6mm or greater 3 82.4

Pine, Slash 6mm or greater 3 96.0

Other Materials

Face Veneer Common Name

Botanical Name Spread of Flame

Index (0-10)

Smoke Developed Index

(0-10)

Klinkii pine Aurancaria hunsteinii 8 4

Radiata Pine Pinus radiata 8 2

Radiata Pine (scorched and brushed surface)

Pinus radiata 7 2

Energy Costs of Construction Plywood is manufactured from a natural, renewable resource; wood. The energy requirements for the manufacture of plywood are relatively low when compared to most other competitive building products. A comparison of processing energy used to manufacture cladding materials is provided in table 3

Table 3: Process energy for various claddings

Cladding Material Processing Energy (mJ/m2)

19mm timber weatherboards 90

12mm plywood 114

150mm concrete blocks 300

0.6mm galvanised steel sheet 308

100mm bricks 1000

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Plywood Exterior Cladding Preservative treated structural or exterior plywood applied direct to studs as exterior cladding can provide a cost efficient, modern architectural look for the most basic or elaborate building project. Significant costs savings are possible if the cladding is structural plywood as it can also act as bracing to protect the structure from wind and earthquake forces. In addition to bracing the structure, structural plywood cladding provides tie down of the top plate to the bottom plate against wind uplift-

refer to the EWPAA “Structural Plywood Wall Bracing Manual” for details, available from the EWPAA Web Site. Additional cost saving can be made with structural plywood clad framing from eliminating the need to use a ribbon top plate to strengthen the top plate for trusses or rafters that don’t coincide with the stud location.

Durability Requirements The two most important characteristics for guaranteed long term performance of plywood as exterior cladding are treatment against fungal and insect attack, and the panel be manufactured with permanent Type A bonds. The preservation treatment should be a minimum of hazard level H3 “outdoors above ground” as defined by AS/NZS1604.3. The preservative treatment currently available are Ruply and Ammoniacial Copper Quaternary Compounds (ACQ) , veneer treatment systems, and a number of pressure treatments for finished panels, including Copper Chrome Arsenate (CCA) and Light Organic Solvent Preservatives (LOSP) . Structural plywood to AS/NZS2269 has a Type A bond, and exterior plywood to AS/NZS2271 can be ordered with Type A bonds. For maximum cost effectiveness it is good practice to use structural plywood as a wall bracing as well as cladding. For maximum long term performance to exposed face of the plywood cladding should be finished with a water repellent or a 100% acrylic latex paint system. Additionally, the edges of the plywood panel should be sealed to minimise water uptake in the end grain. The edge sealing can be done using a water repellent or the same primer used on the face, and is most readily applied while the plywood is in a pack, before installation. Some plywood cladding products presently available in the marketplace have a machined or textured face veneer which provides a good surface to hold paint,

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reduces and disguises any surface checking of the face veneer effectively by dispersing or reflecting the incidence of solar radiation.

Installation Typically, plywood cladding products are manufactured to suit 1200mm cover with shiplapped or other machines joints, thus the studs need to be at 600mm or 400mm centres. These shiplap joints allow for some panel movement. If square edged panels are used, leave a 2-3mm gap between joints on studs to accommodate panel movement due to moisture changes.

The length of standard plywood cladding products available are 2440mm, 2700mm, 2745mm with 3050mm sheets having limited availability. Other panel sizes are available subject to special enquiry. Plywood claddings are normally installed vertically, but may also be placed horizontally (i.e. long dimension across the studs) if horizontal studs are nogged and detailed to prevent water ingress through the joints. Noggings are not required for vertical installation of plywood cladding, unless it is under a horizontal joint. The minimum plywood thickness for external cladding are given in table 4 , and the minimum recommended fastener sizes are given in table 5.

Table 4: Minimum plywood thickness (mm) for external cladding

Stud Spacing (mm)

Plywood face grain running vertically

Plywood face grain running horizontally

Plywood Stress Grade

400/450 600 900 400/450 600 900

F11 12 12 17 8 8 12

F14 12 12 16 7 7 12

Table 5: minimum recommended fastener sizes Plywood Thickness Up to 7mm Up to 21mm

Nails to timber 2.8mm dia x 40mm 2.8mm dia x 50mm

Screws to timber No.8 x 30mm No.8 x 40mm

Screws to steel No.10 x 45mm No.10 x 45mm

Notes: 1. Nails are flathead, and screws are self drilling countersunk head. 2. Fasteners must be no-staining and corrosion protected. For some applications stainless steel

or silicon bronze fasteners may be required.

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It is essential in plywood cladding installation that all joints are weatherproofed using shiplapped joints, battened joints, caulking, flashing timber or elastomeric sealants. Shiplap joints are best installed facing away from the prevailing weather. The use of sisalation or building paper is optional, however, when butt or horizontal joints are utilised, or the framing is steel, the use of this extra protection is recommended. Where used, sisalation must be of the vapour permeable type. To allow for movement in the panel due to excessive wetting during rainy periods, a 2-3mm gap must be provided at all panel edges.

Bracing Resistance of Plywood Exterior Cladding Plywood cladding fixed to timber stud walls, in accordance with all of the requirements of the EWPAA “Structural Plywood Wall Bracing Manual” (available from the EWPAA Web Site) will provide, depending on spacing’s and connection to the sub floor, from 3.0kN/m of bracing resistance per 900mm of clad wall length.

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Typical Joint Details for Plywood Exterior Cladding

Vertical Joint Details

Horizontal Joint Details

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Corner Joint Details

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Finishing The plywood surface must be protected to avoid mechanical breakdown (surface checking) and maximise its appearance and durability. High quality oil based exterior wood stains or 100% acrylic latex paint systems are recommended. Always use a reputable paint brand as cheaper alternatives do not always perform. Light colours are recommended in preference to darker colours as they give superior performance. In humid areas where mould may grow on the paint surface the use of quality mouldicide in the paint is recommended.

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Plywood Interior Wall & Ceiling Lining Plywood with a high quality real wood face veneer can be clear finished to give a real timber appearance to walls, to ceilings or as an eaves lining on verandahs. The plywood face can be traditional rotary peeled or sliced veneer. Alternatively, the plywood can be V grooved thus proving a lining having a traditional planked effect to V jointed boards.

Plywood Specification If the lining is designed to have a secondary as a bracing or a structural diaphragm the plywood must be structural plywood to AS/NZS2269. However, for non structural lining applications completely protected from the weather any plywood product with appropriate face veneer is acceptable. The plywood must be manufactured to a minimum of AS/NZS2270. The appearance of decorative veneer varies considerably depending on species, timber source and the method of veneering and plywood manufacturer. Most plywood lining in the marketplace has attractive rotary peeled pine veneer faces; however, some sliced veneers are available and can be specially matched for colour and figure. The face veneers are sanded smooth ready for the selected surface finish. The back side of the decorative plywood normally is non-decorative and is of reduced quality. For ceilings, 9mm and 12mm plywood linings are available with tongued and grooved edges to negate the need for nogging under the panel sides. If square edged panels are used framing is required to support all edges. Recommended minimum plywood thicknesses are given in table 6. Standard panel size is 2400mm x 1200mm. 2700mm x 1200mm panels are not as readily available.

Installation To minimise shrinkage or expansion of panels after installation, it is good practice to let the plywood panels acclimatise to room temperature and humidity for several days before final fixing. This is best achieved by breaking open the packs and laying out the panels to allow air to circulate around them.

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Wall linings may be fixed to the wall framing with structural elastomeric adhesives and/or panel pins. Ceiling lining panels must be installed with the face grain running across or at right angles to the ceiling battens. For ceiling panels the nails used normally have flat heads, or the screws have countersunk heads, to avoid head pull through. Wood coloured putty can be used to stop fastener holes if required. Alternatively, the use of silicone bronze, copper or copper coloured flathead nails or countersunk screws can look very effective in clear finished timber.

If the plywood lining is fixed to exterior masonry walls, battens are recommended and the masonry wall must be waterproofed. Waterproofing can be achieved by using a polythene vapour barrier.

Plywood Thickness and Support Spacing’s

Table 6: Recommended minimum plywood thickness and support spacing’s

Stud/support spacing (mm) Wall Lining Ceiling lining

450 4mm 6mm

600 6mm 6mm

900 9mm

1200 12mm

Note: for ceiling lining the face grain must run across the span.

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Bracing Resistance of Plywood Wall Lining

Structural plywood wall lining of a minimum 6mm thick F11 (including panels grooved at 100mm centres), fixed to timber and stud walls in accordance with Table 7 can provide bracing resistance against wind and earthquakes. The bullet head nails may be punched just below the plywood surface.

Table 7: Limit State Bracing Resistance of Structural Plywood Wall Lining (6mm F11 minimum)

Fixing Details Bracing Resistance Nailed at 100mm centres around all edges and butt joints and at 200mm on the intermediate studs

2.1kN/m

Glued along all edges and intermediate supports with a continuous 6mm bead of elastomeric adhesive and nailed at 200mm centres

5.3kN/m

Notes:

1. Nails a minimum of 2.5mm diameter x 40mm bullet head. 2. Studs spaced at a maximum of 600mm centres. 3. Structural elastomeric adhesive that meets American Plywood Association Standard AFG-01. 4. Bracing Resistance applies to panels a minimum of 900mm width and a maximum wall height

of 2700mm. 5. Fixing of the bottom plate to the sub-floor can be nominal nailing for the 2.1 kN/m system but

for the 5.3kN/m system the fixing must be strapped or bolted at a minimum of 1200mm centres as detailed in the EWPAA “Structural Plywood Wall Bracing Manual” which is available from the EWPAA Web Site.

Finishing High quality paints, stains, or clear finishes are recommended for plywood linings. Tinted clear finishes e.g. liming grey, allow decorators to create a modern coloured key timber décor. The use of high gloss finishes and paints tend to highlight naturally occurring and manufacturing characteristics of plywood such as changes in grain and beat marks from the sanding. Matt finishes and paints are recommended to provide a natural timber finish.

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Lightweight Roofing System T&G structural plywood in combination with shingles or overlayed waterproof membranes can provide a safe, lightweight, flat or curved roof system in residential, light commercial and industrial buildings. Thickness/span details for a structural, non-trafficable plywood roof system to support lightweight roofing are given in table 9. If the roof is to be trafficable, then the plywood must be treated as a floor and design data sourced from the EWPAA design manual “T&G Structural Plywood for Residential Flooring” available from the EWPAA Web Site. The T&G plywood provides a structural diaphragm and eliminates the need for other forms of bracing in the roof system. The design of plywood diaphragms is covered in Appendix J of AS/NZS1720.1 Timber Structure Code.

Installation of Structural Plywood Roofing System

Plywood Specification The plywood to be used is CD or DD grade T&G structural plywood to AS/NZS2269. Specialised T&G plywood with a decorative underside, usually V grooved to give a planked effect, can be used as a combined structural roof and decorative ceiling. Square edged plywood can be used but will require nogging under the side joints.

Roofing Overlay The roofing overlay must be waterproof and durable. It may be decorated asphalt or fibreglass shingles, timber shakes or shingles, rubber, acrylic or bitumen membranes or metal tiles or decking.

Installation The two major requirements for the T&G structural plywood are the face must run across i.e. perpendicular to, the rafters or trusses, and the plywood must be continuous over two or more spans. The plywood should be installed with 2-3mm gap at all sheet edges, the appropriate fixings are given in Table 8, and the minimum plywood thickness relative to truss or rafter spacing are listed in Table 9.

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Table 8: Fixing of T&G Structural Plywood to Non Trafficable Roofs

Design speed (permissible

Stress) Minimum Fastener

Fastener Spacing at End and Intermediate Supports (mm)

General roofs areas Within 1200mm of Roof

Perimeters

33 metres/second

2.8mm dia. X 50mm Flathead Nails

150 100

No. 8 x 40mm Countersunk self drilling wood screws

150 100

41 metres/second Non Cyclonic

3.05mm dia. X 50mm Flathead Nails

100 (for 1200mm spans)

50 (for 1200mm spans)

150 (for 900mm & 800mm spans)

75 ( for 900 & 800mm spans)

No.8 x 40mm Countersunk self drilling wood screws

150 100

Notes: 1. The above fixings are applicable to timber species with joint strength J4 and JD4 and to plywood up to

21mm in thickness.

2. For higher wind speeds or cyclone sites fixings are to be designed for uplift in accordance with AS/NZS1170.2 “wind actions”.

Table 9: Allowable structural plywood thickness and rafter spacing for plywood non-trafficable roofs supporting light weight roofing systems (20kg/m2 max.)

Rafter or Truss Spacing (mm)

Minimum Allowable Plywood Thickness (mm)

F8 F11 F14

800 13 12 12

900 16 15 15

1200 19 17 16

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Revision History

Revision Changes Date Who

5 Fixed a minor error in the table of the curving plywood section 28-10-13 MB

4 Updated logos and member list 07-02-12 MB

3.0 Updated to include latest JAS-ANZ Logos

Fixed missing fastener description for installation of exterior cladding.

18-12-08 MB

2.0

Reformatted.

Updated several pictures.

Updated Fire resistance information

28-10-08 MB

1.0 Initial Release

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EWPAA Members

Plywood and Laminated Veneer Lumber (LVL) Member Name Location Phone Fax Web

Ausply NSW +61 2 6926 7300 +61 2 6922 7824 www.ausply.com

Austral Plywoods Pty Ltd QLD +61 7 3426 8600 +61 7 3848 0646 www.australply.com.au

Big River Group Pty Ltd NSW +61 2 6644 0900 +61 2 6643 3328 www.bigrivergroup.com.au

Carter Holt Harvey Woodproducts Australia (Plywood) – Myrtleford

VIC +61 5751 9201 +61 3 5751 9296 www.chhwoodproducts.com.au

Carter Holt Harvey Woodproducts Australia – Nangwarry LVL

SA +61 8 8739 7011 www.chhwoodproducts.com.au

Carter Holt Harvey Woodproducts - Marsden Point LVL

NZ +64 9 432 8800 +64 9 432 8830 www.chhfuturebuild.co.nz

Carter Holt Harvey Woodproducts (Plywood) - Tokoroa

NZ +64 7 885 5999 +64 7 885 5614 www.chhwoodproducts.co.nz

Fiji Forest Industries FIJI +67 9 881 1088 +67 9 881 3088

IPL (West Coast) Ltd NZ +64 3 762 6759 +64 3 762 6789

Juken New Zealand Ltd (Gisborne) NZ +64 6 869 1100 +64 6 869 1130 www.jnl.co.nz

Juken New Zealand Ltd (Wairarapa) NZ +64 6 370 0650 +64 6 370 0653 www.jnl.co.nz

Nelson Pine Industries Ltd NZ +64 3 543 8800 +64 3 543 8890 www.nelsonpine.co.nz

PNG Forest Products Ltd PNG +67 5 472 4944 +67 5 472 6017 www.pngfp.com

RH (PNG) Ltd PNG +67 5 325 5600 +67 5 325 6165 www.rhpng.com.pg

Valebasoga Tropikboards Ltd FIJI +67 9 881 4286 +67 9 881 4154

Wesbeam Pty Ltd WA +61 8 9306 0400 +61 8 9306 0444 www.wesbeam.com

Particleboard and MDF Member Name Location Phone Fax Web

Alpine MDF Industries Pty Ltd VIC +613 5721 3522 +61 3 5721 3588 www.alpinemdf.com.au

Borg Panels Pty Ltd NSW + 61 2 6339 6111 + 61 2 6339 6220 www.borgs.com.au

Carter Holt Harvey Woodproducts Australia NSW 1800 891 881 +61 2 9468 5793 www.chhwoodproducts.com.au

D & R Henderson Pty Ltd NSW +612 4577 4033 +61 2 4577 4759 www.drhenderson.com.au

Laminex VIC + 61 9848 4811 www.thelaminexgroup.com.au

Tasmanian Wood Panels (Aust) TAS +613 9460 7766 +61 3 9460 7268

Weathertex Pty Ltd NSW 1800 040 080 www.weathertex.com.au

Visit the EWPAA Website to get the latest information. www.ewp.asn.au Visit www.ewp.asn.au/register to ensure your products carry genuine EWPAA certification