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DUROCK® CEMENTBOARD

EXTERIOR DRYWALL SOLUTIONS

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INTRODUCTION

FEATURES

DUROCK® Cement Boards form an exterior drywall system that is a superior solution to traditional construction methods like brick walls or autoclaved-aeriated concrete (AAC) blocks. Being lightweight and versatile, the extremely durable DUROCK® exterior drywall allows faster speed of construction for residential or commercial buildings.

This proprietary exterior wall system combines the use of a specially designed steel framing structure with high quality DUROCK® cement boards on the exterior side and plasterboard on the internal side.

Fast and Easy InstallationEasy to cut and fasten. Dry panel application eliminates cement mixing and drying time.

Dimensional StabilityLow thermal and hydrometric movement helps resist cracking.

VersatilityUnlimited designs with numerous finishing options to suit architects' imaginations.

Water DurableHumidity & moisture resistant. Will not swell, soften, decay, delaminate or disintegrate in water.

Dual SurfaceRough surface enhances bonding. Reduces tile slip with mortar applications.

High StrengthHigh flexural strength helps resist cracking.High indentation strength to resist impact damage.

Light WeightBoard weight is 11.7 kg/m2.

Mold and Mildew ResistantResistant to mold and mildew.Scores a 10 out of 10 as per ASTM D3273 standard for resistance to mold growth.

Features & Benefits

DUROCK® CEMENT BOARD APPLICATIONS

DUROCK® can be used in the construction of:• Exterior Walls• Facades• Exterior Ceilings• Sporting Facilities• Education Centre• Chalets or Villas• Pre-engineered Buildings (PEB)• Prefabricated Prefinished Volumetric Construction

(PPVC)• Bathrooms• Showers• Kitchens• Laundries• Swimming Pools (interior ceiling)• Saunas

DUROCK® Cement Board is a non-combustible panel idea for use as a substrate for brick veneer, properly detailed Exterior Insulation Finish System (EIFS) and Direct-applied Exterior Finish System (DEFS), clapboard siding, panel siding, shingle siding, shake siding and conventional stucco.

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DUROCK® EXTERIOR DRYWALL VS CONVENTIONAL SYSTEM

DUROCK® Exterior Drywall Conventional System (Brick Wall)

Construction Technique Dry construction Wet construction

Design Flexibility Bending radius up to 1.8 meters Curves are achieved manually and are heavily dependent on laborer’s skill

Construction Speed 20-25m2/man day 4-7m2/man day

Energy Cost Efficiency Lower U-value helps save energy (0.35W/m2.K) Higher U-value (3.43W/m2.K) which results in higher energy consumption from air-conditioning

Wall Thickness Flexible wall thickness, allowing for larger gross free area

Wall thickness determined by brick size, which reduces gross free area

Weight Approx. 30 to 40kg/m2 Approx. 300-350kg/m2

Acoustic DUROCK® 123mm wall offers an estimated STC 47. Ideal for Residential, Hospital, Hospitality, Educational and other sensitive buildings

230mm thick wall estimates only up to STC 40

Fire Resistance Up to 2 hours No certified data

Selsmic Resistance Ideal for earthquake prone zones & high rise buildings due to low dead weight. Ductile system can take large deformations with less potential for damage in case of failure.

Heavy weight and absence of mechanical fixings makes it vulnerable to large deformations and can lead to premature structural failure

Refurbishment Minimal structural implications due to significantly lighter system

Additional structural cost incurred for reinforcement works

System Comparison

BENEFITS

Versatility onexterior wall design

and finishing.

Much lowermaintenance cost fromwall crack and waterpenetration issues.

Proven exteriordrywall solutionover 20 years(durability).

Flexible systemperformance design(fire, acoustic and

thermal).

Up to 6 times fasterin exterior wallconstruction.

Up to 10 times lowerU-value (better

thermal insulationperformance).

Up to 10 times lightweight exterior wall

structure.

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DUROCK® CEMENT BOARD SPECIFICATIONS

• Aggregated Portland cement board with polymer-coated, scrim mesh embedded in back and front surfaces.• Ends are square cut and edges are reinforced and finished smooth.• The long edges of panels are tapered, allowing joints to be reinforced and concealed with DUROCK® joint treatment

systems.• Rough exterior face to faciliate adhesion of the Baseflex Compound.• Easier to lift, carry and install.• Moisture resistant and mold resistant.• It will not suffer damage due to deterioration, warping, delaminating, or disintegrate when exposed to direct water

contact for a long period of time.

Product Specification

Performance Standard

Flexural Strength Transverse 5.39 MPaLongitudinal 4.17 Mpa

BS EN 12467

Water Absorption ≤30% ASTM C1185-08

Axial Screw Withdrawal 18 N/mm BS EN 320

Non-Combustibility Non-combustible BS 476 - 4

Thermal Conductivity 0.115W/m.K ASTM C518

Heat/Rain Performance(50 heat-rain cycle)

Pass (No visible cracks, delamination, warping and bowing)

BS EN 12467

Mold Resistance 10/10 ASTM D3273

Min. Bending Radius 1.83m

Moisture Content 11.4% ASTM C1185

Moisture Movement 0.7% BS EN 12467

Water Impenetrability No formation of water droplet underneath

BS EN 12467

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Exterior Systems

DUROCK® EXTERIOR DRYWALL SYSTEMS Rondo Track 92mm x 32mm x BMT 0.90

Insulation

Rondo Stud 92mm x 35mm x BMT 0.90 @ 406mm c/c

Tyvek Stuccowrap

3mm thk. DUROCK® Basecoat or Baseflex

Vinyl L Trim

Vinyl Drip Casing Bead

Durock Screw

1 x 12.7mm thk. FIBEROCK® AQUA-TOUGH™

1 x 12.5mm thk. Firestop™ board

1 x 12.7mm thk. DUROCK® Cement board

Durock Joint Tape

Tape embedded in DUROCK® Basecoat

EXTERNAL

INTERNAL406mm c/c

DUROCK® 1.5-Hour Fire RatedExternal Wall System

INTERNAL

Rondo Track 92mm x 32mm x BMT 0.90

Insulation

Rondo Stud 92mm x 35mm x BMT 0.90@ 406mm c/c

3mm thk. DUROCK® Basecoat or Baseflex

Vinyl L Trim

Vinyl Drip Casing Bead

DUROCK® Screw

1 x 12.7mm thk. DUROCK® Cement board

DUROCK® Joint Tape

Tape embedded in DUROCK® Basecoat

EXTERNAL

1 x 12.7mm thk. DUROCK® Cement board

406mm c/c

Tyvek Stuccowrap

DUROCK® 1-Hour Fire RatedExternal Wall System

DUROCK® 2-Hour Fire RatedExternal Wall System 2 x 16mm thk. USG Boral Firestop™ board

Rondo Stud 92mm x 35mm x BMT 0.90 @ 406mm c/c

Insulation

Tyvek® Waterproof Membrane

2 x 12.7mm thk. DUROCK® Cement board

DUROCK® Screw

DUROCK® Joint Tape

Tape embedded in DUROCK® Basecoat/ Baseflex

3mm thk. DUROCK® Basecoat/ Baseflex

Vinyl L Trim

Vinyl Drip Casing Bead

Rondo Track 92mm x 32mm x BMT 0.90

Rondo Track 92mm x 32mm x BMT 0.90

Insulation

Rondo Stud 92mm x 35mm x BMT 0.90 @ 406mm c/c

Tyvek Stuccowrap

3mm thk. DUROCK® Basecoat or Baseflex

Vinyl L Trim

Vinyl Drip Casing Bead

Durock Screw

1 x 12.7mm thk. FIBEROCK® AQUA-TOUGH™

1 x 12.5mm thk. Firestop™ board

1 x 12.7mm thk. DUROCK® Cement board

Durock Joint Tape

Tape embedded in DUROCK® Basecoat

EXTERNAL

INTERNAL406mm c/c

DUROCK® 1.5-Hour Fire RatedExternal Wall System

INTERNAL

Rondo Track 92mm x 32mm x BMT 0.90

Insulation

Rondo Stud 92mm x 35mm x BMT 0.90@ 406mm c/c

3mm thk. DUROCK® Basecoat or Baseflex

Vinyl L Trim

Vinyl Drip Casing Bead

DUROCK® Screw

1 x 12.7mm thk. DUROCK® Cement board

DUROCK® Joint Tape

Tape embedded in DUROCK® Basecoat

EXTERNAL

1 x 12.7mm thk. DUROCK® Cement board

406mm c/c

Tyvek Stuccowrap

DUROCK® 1-Hour Fire RatedExternal Wall System

DUROCK® 2-Hour Fire RatedExternal Wall System 2 x 16mm thk. USG Boral Firestop™ board

Rondo Stud 92mm x 35mm x BMT 0.90 @ 406mm c/c

Insulation

Tyvek® Waterproof Membrane

2 x 12.7mm thk. DUROCK® Cement board

DUROCK® Screw

DUROCK® Joint Tape

Tape embedded in DUROCK® Basecoat/ Baseflex

3mm thk. DUROCK® Basecoat/ Baseflex

Vinyl L Trim

Vinyl Drip Casing Bead

Rondo Track 92mm x 32mm x BMT 0.90

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DUROCK® EXTERIOR PARTITION COMPONENTS

DUROCK® CEMENT BOARDDUROCK® Cement Board is an aggregated Ptortland cement board with polymer coated scrim mesh on front, back faces and edges.Dimension: 12.7mm x 1220mm x 2440mm (12.7mm x 1200mm x 2400mm available upon request)Weight: Approximately 11.7kg/m2

Packaging: 40 pcs/pallet

DUROCK® BASEFLEXDUROCK® Baseflex is the recommended compound for joint treatment and can be used as a base coat for the for the entire surface before applying final exterior paint. It is also recomended as an adhesive for ceramic tiles. Packaging: 22.7kg per bagCoverage: For a layer of maximum 2 to 3mm thickness, 5 to 6m2 per bag. For the tile (adhesive application using 1/4” adhesive spreader), 4m2 per bag.

USG BORAL EXTERIOR METAL FRAMING SYSTEMExterior metal framing system that is specially engineered according to international standards such as BS EN 1993-1-3, BS 5950-5 and AISI S100.

TYVEK® WATERPROOF MEMBRANEIt is a weather resistant barrier for DUROCK® Exterior Drywall System.1.53m wide and 61m long per roll

TEK SCREW12.7MM TEK SCREWFor affixing metal studs to LB-1 bracket or as specefied.Packaging: 10,000 pcs/box

DUROCK® JOINT TAPEDUROCK® Joint Tape is made of polymerized fiberglass mesh. It embeds into DUROCK® Baseflex for joint treatment.50m length x 100mm width per roll

DUROCK® SCREWDUROCK® Screws in 32mm and 41mm with corrosion resistant Ruspert coating for securing DUROCK® Cement Board panels to metal framing of 0.9mm to 2mm. Packaging: 32mm - 5,000 pcs/box 41mm - 4,000 pcs/box

PVC BEADSPVC Beads for DUROCK® Exterior Drywall System resist cement alkalinity conditions, weather, UV rays, and the various factors that external systems are exposed to. They come in lengths of 3.05m and are fixed to the system with screws that are hidden during the joint treatment process.

Components

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2017 - CCK Endau Kindergarten, Malaysia.

2016 - Tata Promont (Tata Housing) Bangalore, India.

2014 - City Express Plus Hotel,Monterrey, Mexico.

2014 - Residential Condo at Science Park, Monterrey, Mexico.

2010 - Marina Bay Sands Hotel and Resort, Singapore.

2015 - Jet Airways Godrej BKC, Mumbai, India.

Project Reference

REFERENCE JOBSITES WITH DUROCK® EXTERIOR DRYWALL SYSTEM

2004 - Plaza Universidad, Mexico.

Australia ChinaIndia Indonesia Malaysia Middle East New ZealandPhilippines SingaporeSouth Korea Thailand Vietnam

USG BORAL PTE LTD8 Boon Lay Way TradeHub 21 #02-06 Singapore 609964 Tel: (65) 6272 9272 Fax: (65) 6278 5310