Durasheet Fibre Cement Sheet

BGC Durasheet is designed for the cladding of gable ends, soffits, eaves, car
ports and verandah linings of timber and steel framed buildings.

4.5mm is generally used in timber framed residential and light commercial buildings for soffit linings and the cladding of features such as gable ends. 6.0mm is recommended for commercial applications, cyclonic wind zones and steel framed constructions.


  • available in two thicknesses to suit both residential and commercial.
  • general purpose sheet
  • 6.0mm suitable for cyclonic wind zones
  • classified as Type A Category 3 for external use
  • can be used on timber and steel framed buildings

1800 2100 2400 2700 3000
4.5 450 x
600 x
750 x
900 x x x x
1200 x x x x x
6 900 x x x x
1200 x x x x

*some sizes may not be available in all states, please check with your local BGC office for availability.

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1 Design QT Eco Series

1.1 Material Properties

Width Length Thickness Weight
900mm x 2250mm x 50mm (nom) 40kg (nom)
  • Total Square Metres per Panel = 2.0 m2.
  • Number of 50mm Panels per Pallet = 23 panels Pallet Weight:- 940kg (approx) (± 20 kg safety factor).
  • Pallet Size – 900mm Width x 2250mm Length x Max. 1350mm Height (nom).

1.2 Thermal Performance

The Thermal performance of the QT EcoSeries Wall System is calculated in accordance with AS 2627.1 Thermal Insulation of Dwellings. QT EcoSeries Wall Panel has a k-value of 0.07 w/mk.

Wall System Composition

* Note: R-Values in table have been rounded up or down to the nearest R0.5 as permitted under AS 2627.1.

1.3 Impact Resistance

QT EcoSeries Wall Panel when coated with a cement base render, can provide resistance for hard body impacts typically found under normal situations. (Refer coating manufacturers for details).

1.4 Acoustic Performance

The QT EcoSeries Wall System was tested in accordance with AS/NZS 1276.1 for Airborne Sound Transmission and achieved STC41 and Rw41(-3;-8)(Wall Composition: 50mm QT EcoSeries Wall Panel with 30mm (nom) cavity on a 70mm x 35mm stud frame and 10mm plasterboard) CSIRO TL399. Acoustic performance can be significantly increased with the addition of bulk or acoustic insulation batts.

1.5 Fire Performance

QT EcoSeries Wall Panels when tested to AS/NZS 3837 and in accordance with BCA Specification C1.10a Section is classed as a GROUP 1 material.

Early Fire Hazard Indices (Test to AS/NZS 1530 Part 3)
Ignitability Index 0
Spread of Flame Index 0
Heat Evolved Index 0
Smoke Developed Index 0-1


1.6 Durability

In normal conditions and when maintained properly in a weather proof condition, the cladding systems should exceed 30 years of trouble free serviceable life. When the system is installed in high corrosion zones, such as coastal locations within distances of up to 500m from the sea, particular care must be taken to ensure that openings through the cladding panels are kept to a minimum to prevent corrosive salt aerosols from entering the wall cavity and affecting metal components. (Permitted openings are base weepholes, soffit vents and openings beneath window joinery at sills).

Wildlife Attack

The panels will not support growth of micro-organisms such as fungi or bacteria and do not hold any nutritional value for ants or rodents.

1.7 Cavity

Cavities form an important role in the weathertightness and life cycle of any wall system QT EcoSeries Wall Panels constructed without a cavity will void any warranty. The cavity acts as a secondary barrier against wind driven rain penetration entering the wall framing. The cavity also allows the wall to ventilate and drain which is essential for a healthy wall.

1.8 Vapour Permeable Sarking

Vapour permeable sarking must be installed to the face of the building framing prior to installation of the battens and panels. The vapour permeable sarking has two main functions, weathertightness and thermal resistance. In its weathertightness role it protects the building framing from direct contact with moisture generated by wind driven rain penetration, while allowing the condensation of moisture from interior artificial heating and cooling to escape. Thermally the vapour permeable sarking divides the wall into two separate air spaces, which significantly increases the thermal performance of the wall.

1.9 Weepholes

On the first horizontal course (ground level) weep holes are to be installed at centres not exceeding 1200mm immediately above any damp proof membrane or flashing. Weepholes are also required in areas where there is a possibility of moisture build up. Weepholes must be limited to 8mm in width to reduce the potential for vermin access.

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8 Product Information QT EcoSeries

8.1 Storage and Handling

Care should be exercised in handling the QT EcoSeries Wall Panels to avoid any damage to edges, ends and faces. Panels must be stacked flat, off the ground and supported on a level platform. Plastic Shrinkwrap applied to pallets of panels for transportation from the factory, must be removed at the destination (i.e. distributors warehouse or direct to site) to allow panel to continue drying and equalise with local humidity. The panels must be kept dry at all times by storing under cover, or providing weatherproof covers to the stack. Panels must be dry prior to fixing. Intermittent weather exposure is not detrimental to the panel.

However if QT EcoSeries Wall Panels become wet, allow thorough drying before fixing. Drying shrinkage may occur if the QT EcoSeries Wall Panels are not allowed to dry sufficiently. The proprietary Coating System must be applied and completed within 1 month from the date of installation of the QT EcoSeries Wall Panels.

QT EcoSeries Wall Panels and cement based renders, will release their salts and/or fines if saturated; this condition is know as efflorescence. In order to prevent efflorescence the cement products must be sealed to prevent the ingress of moisture and/or installed with careful attention to the weather-tightness details to prevent the ingress of wind driven rain, gutter overflow or moisture tracking along a surface with capillary action. The water that has permeated through the panel and render will collect and dissolve any salts and/or fines that are then released through hairline cracking in the render which are caused by hydrostatic pressure build up. The dissolved salts and/or fines will crystallise on the external surface. Should efflorescence occur, it is essential that the moisture source be eliminated and any hairline cracking repaired to maintain weathertightness. Refer to coating manufacturer for suitable surface repair techniques.

Panels must always be carried on edge. Any minor damage should be repaired with joint compounds or polyurethane foam. Fixings and other accessories must be stored so that they are kept clean, dry and undamaged.

All components must be used within the designated shelf life. Any damage to Clips and Channel may affect the integrity or performance of the wall system. Panel may be cut with an electric circular saw 60 pt tungsten tip blade, diamond blade or handsaw. Panels are best shaped with the use of an electric plane or a handrasping tool. Holes or services may be formed with the use of an electric fretsaw or drill. When power tools are used for cutting, grinding or forming holes in the panels, appropriate safety measures as set out under the heading of Health and Safety must be observed.

All materials that are susceptible to deterioration due to plastics migration or alkalinity of cement base products must be protected (check with product manufacturer).

8.2 Quality Policy

QT Systems Pty Ltd is dedicated to delivering quality building systems for internal and external use on residential and commercial projects. QT Systems Pty Ltd is committed to ensuring that its Conpolcrete building products provide the highest standards and consistency by meeting the requirements of customers and regulatory authorities. This objective is met through the implementation of a Quality System, based upon the requirements of an internationally recognised quality standard: AS/NZS ISO 9001:2000. Continued testing and independent scrutiny will ensure QT Systems Pty Ltd continues to offer an eco-friendly alternative construction material that consistently provides outstanding performance.

8.3 Maintenance

Annual inspection of the exterior walls must be made to ensure they remain in a weatherproof condition. Checks must be made of the exterior coating system, sealants, flashings, control joints and any water-proofing systems. Should any repairs be required, seek remedial advice from the manufacturer. If the project is still under the statutory warranty period contact the appropriate body, or check with your insurer.

8.4 Limitations of the QT EcoSeries Wall Panel System

QT EcoSeries Wall Panels are not designed to provide bracing for the building. The internal linings or other specifically designed systems must provide external wall bracing.

QT EcoSeries Wall Panels are not suitable to be used for chimneys and flues.

QT EcoSeries Wall Panels must not come in contact with the ground for extended periods of time. The panel must not be used for retaining.

This Technical Manual is limited to residential construction, for other applications contact your QT Distributor.

Designers must check that the details in this Technical Manual meet their own specific design requirements. For use outside the scope of this Technical Manual, specific design may be necessary. The Architect, Designer, Engineer, Specifier and Builder, are responsible for specific design and should ensure compliance with the BCA.

8.5 Product Support

Installers are registered trades people, equipped to install the panel and its complementary accessories. These installers, acting as independent contractors, should be industry licensed trades people such as carpenters or dry wall installers who are familiar with the QT EcoSeries Wall Panel system and components. The authorized agent or appointed licensee shall supply all QT EcoSeries Wall Panel system components directly to the contracting or sub-contracting party. We recommend you seek advice from all manufacturers or suppliers, regarding correct installation and maintenance requirements associated with their products. Failure to comply with specification requirements, which may compromise the exterior coating, sealants, flashing, weatherproofing and waterproofing, will render any manufacturers warranty void.

QT Systems Pty Ltd regularly updates its literature to keep up with system and product developments, changing trends in design, and therefore reserves the right, to revise and change its technical information without notice.

8.6 Health and Safety

As with all cement based composite products, they contain crystalline silica. Breathing in fine silica dust is hazardous and may result in bronchitis, silicosis (lung fibrosis) and lung cancer. Do not breathe dust, always contain dust during clean up and disposal i.e. place dust in a sealed bag. Safe working practice is to avoid contact with skin, eyes and lungs, e.g. full-length clothing including boots, P1 or P2 dust mask, and safety goggles to AS 1337. (Wash worn clothing regularly, each day). We recommend that you always seek advice for recommended handling, health and safety requirements for products or components by other suppliers and manufacturers. Consult your local Work Place Health and Safety Officer for specific advice. Also see Material Safety Data Sheets for specific products.


8.7 Components & Accessories

8.8 General Warranty

New Product 15 year Warranty. This warranty cover limits any cost or liability arising from the supply of defective Conpolcrete products, excluding third party manufactured accessories and components. Liability is limited to replacement and or repair of any defect solely attributable to defective Conpolcrete manufactured products that do not meet the manufacturers standards. No liability is assumed or implied for project supervision or defects caused by improper installation of the system.

8.9 Disclaimer

QT Systems Pty Ltd provides the information in this manual in good faith and to the best of its knowledge the information is correct and covers most situations where its products may be used. However, it is acknowledged that not every possible application of QT products could be covered within this manual therefore specific design and detailing, must be undertaken by the designer. The Specifier, Architect, Designer and Engineer for the project are responsible to ensure that the information and details in this manual are suitable for any intended application or specific design.

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