The proprietary coating systems consist of polymer-modified cement renders, which must be finished with an acrylic texture and paint. The proprietary coating manufacturer’s instructions and application requirements must be followed at all times. *(Available to download from the QT website) In most cases these coating systems must be applied by an approved applicator. High profile or heavy texture finishes can minimise surface imperfections or glancing light concerns. Light coloured coatings are recommended. Polymer-modified cement renders must not be applied over sealants or control joints.

5.2 Pre – Coating System Inspection

Check all internal and external corners are formed correctly and have good straight lines. Check the first horizontal course, and panels above rooflines have a good clean bottom line. Check weep holes have been installed in the first horizontal course. With a 1.8m spirit level check for variations greater than 3mm in the QT EcoSeries Wall Panels, especially where panels butt together. If variations are found, take the appropriate remedial action eg. rasp to an acceptable level, or re-fix the offending panels. It is important to eliminate large variations, as they may appear under critical or glancing light conditions. If the internal lining has not yet been installed, advise the building supervisor that internal wall lining cannot be installed using nails as the knocking vibrations will transfer through the frame and crack the render coatings (hairline cracking). Hence internal lining must be screwed. After the inspection has been completed, application of the base coat can begin.

5.3 Application of a Polymer Modified Render Base Coat

Trowel an even coat of polymer-modified cement render over the entire QT EcoSeries Wall Panel, embed QT FullMesh into the wet Render, overlapping joints by 100mm minimum. Allow to firm and then screed and or float to a flat and level finish. The purpose of this coat is to even out the substrate and the porosity of the QT EcoSeries Wall Panel. 150mm wide x 300mm long strips of QT 45° Mesh are also required to be set into the base coat at 45° angle across the corner of all windows and door openings into wet render. Do not render or texture over control joints. The above is a generic guide only. Refer to the proprietary coating manufacturer’s instructions for a detailed description of application. Any proprietary coating system specified must meet or exceed the performance criteria of the BCA.

DURAGRID SHEETING HAS A SMOOTH, FLAT SURFACE AND SQUARE EDGE FINISH WHICH IS SUITABLE FOR EXPRESSED JOINTING AND PROVIDES A FACADE SUITABLE FOR A NUMBER OF FINISHES – FROM PAINTED TO TEXTURED COATINGS.

THE DURAGRID FACADE SYSTEM:

• IS LIGHTWEIGHT
• IS HIGHLY DURABLE
• PANELS ARE NOT AFFECTED BY TERMITES, AIR, STEAM, SALT OR SUNLIGHT
• CAN BE EASILY DECORATED IN A NUMBER OF DESIGN FINISHES
• QUICK AND SIMPLE TO INSTALL USING MANUAL NAILING OR GUN NAILING OR SCREW FIXING

BGC Duraplank is designed and manufactured as a plank which is reminiscent of traditional weatherboards both in appearance and installation methods. BGC Duraplank is not subject to decay, rot or white ant damage and is non combustible. The result is a safer, more durable cladding that requires minimum maintenance.

BGC Duraplank is available with a smooth finish, woodgrain (Douglas Fir) or rusticated texture for that authentic weatherboard look. Duraplank has the strength to withstand the rigours of normal family activities.

Duraplank:

• reminiscent of traditional weatherboards
• not subject to decay, rot or white ant damage
• safe and durable
• available in 3 different profiles

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

* Insert or select appropriate specifications.

Scope

The contractor shall furnish all material and equipment required to satisfactorily complete the installation and jointing of Hebel PowerFloor where indicated in the contract specification.

Materials

All AAC material shall be a Hebel PowerFloor panel as manufactured by CSR Hebel.

All accompanying fixings shall be those supplied by CSR Hebel or approved by the project engineer.

All lining materials shall be Gyprock plasterboard as manufactured and supplied by CSR Gyprock (or products of equivalent or better performance). All plasterboard shall be manufactured to meet the dimensional requirements of AS/NZS2588 ‘Gypsum Plasterboard’.

Steel frame components shall be those manufactured by Rondo Building Services Pty Ltd (or products of equivalent or better performance).

Construction adhesive shall be Fuller Max Bond as manufactured and supplied by Fuller (or products of equivalent or better performance).

All sealants shall be a polyurethane type with required fire and acoustic ratings, (or products of equivalent or better performance).

All infill materials shall be products manufactured and supplied by CSR Bradford (or products of equivalent or better performance).

Power Floor System

The contractor shall supply and install a Hebel PowerFloor system *PF-………(…), in accordance with CSR Hebel Detached Houses & Low Rise Multi-Residential Floor Design Guide, NºHBLA185, and CSR Gyprock Fibre Cement Fire & Acoustic Design Guide (‘The Red Book‘), NºGYP500, and shall satisfy the following performance criteria.

The Hebel PowerFloor system shall have a Fire Resistance Level of *FRL…/…/… for a fire source ‘from above’ in accordance with the requirements of AS1530.4. Design of the joists shall allow for temperature effects.

Installation shall be carried out to the level specified for a field acoustic performance of *D_ntw………… using cavity infill of *Bradford …………… (or products of equivalent or better performance).

Levels of Finish – Floor Covering

Prior to installation of the floor covering,the contractor shall ensure the installed panels are within the tolerances of the project specifications. The contractor shall ensure that all control joints are installed as per project specifications, panel joints are completely filled with Hebel Adhesive, minor chipping damage of the panels shall be patched with Hebel Mortar, and all sealants are installed as per manufacturer’s specifications.

Floor coverings shall be installed as per manufacturer’s specifications, unless specified otherwise in the contract documentation.

Ceiling System

The contractor shall supply and install the Gyprock Ceiling System *N°CSR……… in accordance with CSR Gyprock Fibre Cement Fire & Acoustic Design Guide (‘The Red Book‘), NºGYP500. The ceiling framing shall be lined with *……… layers of……… mm Gyprock……… plasterboard.

Levels of Finish-Ceiling Systems

All ceiling framing systems, plasterboard lining, jointing and finishing shall be carried out to *Level ……… Level of Finish, in accordance with CSR Gyprock Plasterboard Residential Installation Guide, NºGYP547, AS/NZS2589.1 ‘Gypsum Linings in Residential and Light Commercial Construction – Application and Finishing’.

Plasterboard

The Hebel PowerFloor system ceiling framing shall be lined with *………… layer/s of …………mm Gyprock ……………… plasterboard.

All layers shall be fixed to the framing (ie., timber or steel floor joists and/or steel furring channels) as specified for the relevant system in the CSR Gyprock Ceiling Systems Installation Guide, NºGYP570, other relevant CSR Gyprock technical literature, and Rondo Building Services Pty Ltd literature or steel frame manufacturer’s literature.

Jointing & Finishing

Jointing and finishing of the outer layer of plasterboard shall be in accordance with the CSR Gyprock Plasterboard Residential Installation Guide, NºGYP547.

Caulking

Where caulking is indicated in fire rated systems *…………………… fire rated polyurethane sealant or fire rated backing rod with *……………… acoustic rated polyurethane sealant shall be used, and installed in accordance with the manufacturer’s recommendations.

Where caulking is indicated in wet areas, a *…………………… polyurethane sealant must be used when caulking *non-fire rated/fire rated wet areas, as indicated, and installed in accordance with the manufacturer’s recommendations.

Important

Any variation or substitution of materials or assembly requirements, or compromise in assembly may result in failure under critical conditions.

A distinct difference between the systems is the PowerPanel to framing connection methods and the resulting acoustic performance qualities.

75mm Hebel Intertenancy 001 utilises an aluminium bracket system. The bracket system provides the wall with a ‘Discontinuous Construction’ rating.

75mm Hebel Intertenancy 002 offers a top hat connection where the panel is secured to the framing with horizontal steel top hats.

Detail 3.1: 75mm Hebel Intertenancy 001

Detail 3.2: 75mm Hebel Intertenancy 002

Where it is proposed to construct single dwellings side-by-side on a single allotment the internal wall between dwellings is a fire separating wall as defined in the BCA. The fire separating wall must start from the ground level (top of concrete footings or top of floor slab) and achieve a 60/60/60 FRL if load bearing, or –/60/60 FRL if nonload bearing. The wall must go to the underside of a non-combustible roof covering and any gaps be filled with fire resisting material as described in Detail 3.7.1.11 of Volume Two of the BCA.

Dwellings Constructed Side-By-Side on Separate Allotments

Where it is proposed to construct single dwellings side-by-side on separate allotments, or if subsequent subdivision is proposed, the wall might also be considered an external wall and each dwelling may be required to have its own wall starting from the ground level (top of concrete footings or top of floor slab) and each achieving a 60/60/60 FRL if load bearing, or –/60/60 FRL if non-load bearing. Contact your local authorities, as there may also be applicable legislation or discretionary powers available to vary these provisions.

Dwellings Constructed Side-By-Side on a Single Allotment Where Subdivision May Subsequently Occur.

Where it is proposed to construct single dwellings side by side on a single allotment and it is known that subsequent subdivision will occur, or that subdivision might occur (and this will probably apply to most multi-dwelling developments) then, after subdivision, the internal fire separation wall might also be considered an external wall and each dwelling may be required to have its own wall starting from the ground level (top of concrete footings or top of floor slab) and achieving a 60/60/60 FRL if load bearing, or –/60/60 FRL if non-load bearing. Contact your local authorities, as there may also be applicable legislation or discretionary powers available to vary these provisions.

Hebel PartyWall Solutions in tiered applications

Where the internal fire separation wall extends beyond the roof line on one side only and becomes an external wall, contact CSR Hebel Engineering Services for advice on PowerWall external wall solutions.

Compliance with the Building Code of Australia (BCA)

All building solutions, such as walls, floors, ceilings, etc. must comply with the regulations outlined in the Building Code of Australia (BCA) or other authority.

The BCA is a performance based document, and is available in two volumes which align with two groups of ’Class of Building’: Volume 1 – Class 2 to Class 9 Buildings; and Volume 2 – Class 1 & Class 10 Buildings – Housing Provisions. Each volume presents regulatory Performance Requirements for different Building Solutions for various classes of buildings and performance provisions.

These Performance Provisions include:

• Structure
• Fire Resistance
• Damp & Weatherproofing
• Sound Transmission & Insulation
• Energy Efficiency

This design guide presents tables and information necessary to design a Hebel PartyWall installation that complies with the Performance Requirements of the BCA. The designer must check the adequacy of the building solution for Performance Requirements outlined by the appropriate authority.

Detail 4.1: Typical Applications.

B1 Architectural Specification

This specification should be adopted as a guide only, and shall be superseded by the contract specifications of the project.

* Insert or select appropriate specifications.

Scope

The contractor shall furnish all material and equipment required to satisfactorily complete the installation and jointing of the specified Hebel PartyWall system where indicated in the contract specification and/or on the layout drawings.

Materials

All AAC material shall be Hebel PowerPanel as manufactured by CSR Hebel. All accompanying fixings shall be as per the current Hebel Low Rise Multi-Residential Party Walls Design & Installation Guide, NºHBLA228 LRPW and/or the appropriate project consultant’s specifications. All lining materials shall be Gyprock plasterboard or Cemintel Fibre Cement sheet as manufactured and supplied by CSR Building Products (or products of equivalent or better performance). Plasterboard shall be manufactured to meet the dimensional requirements of AS/NZS2588 ‘Gypsum Plasterboard’. Steel frame components shall be those manufactured by Rondo Building Services Pty Ltd (or products of equivalent or better performance). All infill material shall be CSR Bradford infill as manufactured and/or supplied by CSR Bradford (or products of equivalent or better performance).

Wall System

The contractor shall supply and install *75mm Hebel Intertenancy 001, Option ……… or *75mm Hebel Intertenancy 002, Option ……… in accordance with the current Hebel PartyWall Design & Installation Guide, NºHBLA228 LRPW, and shall satisfy the following performance criteria. The wall shall have a Fire Resistance Level *FRL ……/……/…… in accordance with the requirements of AS1530.4. Installation shall be carried out to the level specified for a field acoustic performance of *D_ntw/R‘_w …………… using cavity infill of *Bradford………………… (or products of equivalent or better performance).

Lining Boards

The stud frame on each side or the PartyWall shall be lined with one layer of *…………mm Gyprock *……………… plasterboard, or one layer of *…………mm Cemintel *……………… fibre cement sheet. All layers shall be fixed and caulked as specified for the relevant system in the Gyprock Plasterboard Installation Manual, NºGYP547, other relevant CSR technical literature, and Rondo Building Services literature or appropriate steel frame manufacturer’s literature.

Plasterboard Levels of Finish

All framing, plasterboard lining, jointing and finishing shall be carried out to *Level ………Level of Finish, in accordance with Gyprock Plasterboard Installation Manual, NºGYP547 and/or AS/NZS2589.1 ‘Gypsum Linings in Residential and Light Commercial Construction – Application and Finishing’.

Caulking

Provide a * one or two sealant system in accordance with the sealant manufacturer’s requirements. The sealant system shall meet or exceed the fire resistance level (FRL) rating of the Hebel PartyWall system in which it is used. In fire rated systems where caulking is indicated, use *……………… fire rated polyurethane sealant with non fire-rated backing rod, installed in accordance with the manufacturer’s recommendations or use *……………… acoustic rated polyurethane sealant with fire-rated backing rod installed in accordance with the manufacturer’s recommendations. In non fire-rated or fire-rated wet areas where caulking is indicated, use fire rated *……………… polyurethane sealant installed in accordance with the manufacturer’s recommendations.

Important

Any variation or substitution of materials or assembly requirements, or compromise in assembly may result in failure under critical conditions.