Hebel Coating Systems for a Perfect Finish

Hebel has worked closely with Dulux AcraTex to develop a total system for each market segment – all tested in the market place and strongly supported by both companies.

Given the variability of some coatings – not all are what they claim to be – customers can be confident that when they choose Hebel coatings they have been correctly formulated to a consistent recipe.

Dulux is the most recognized brand of paint and coating systems in Australia. They manufacture and distribute a wide range of quality products, with over 230 outlets around Australia.

The Hebel and Dulux AcraTex relationship is an industry first alliance, delivering true integration of substrate and coatings to ensure lasting performance.

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QT EcoSeries Construction Details

Slab & Floor

All foundations must comply with the relevant standards and local authority requirements, with appropriate consideration given to soil type. QT EcoSeries Wall Panel is suitable for construction on concrete slab or suspended floors.  The concrete slab can either be rebated or non-rebated.  The slab rebate will need to be a minimum of 50mm below floor level and 100mm above paved level or 150mm above ground level (See local standards). To ensure a flush finish, the width of the slab rebate needs to allow for the thickness of the coating system, the thickness of the panel (40mm or 50mm), and the size of the extended wall cavity 20 – 50mm (30mm nom). Minimum ground clearances, must be maintained at all times during the life of the building. Insufficient clearance from the ground to the bottom of the wall panels will affect long-term durability.

Termites

The Building Code of Australia in conjunction with AS 3660 specifies the requirement for termite risk management.

The edge of a slab-on-ground may be used as a visual perimeter barrier. Provided that the slab edge is left exposed not less than 75mm above finished ground or paved level. The face of the perimeter must not be concealed by a flashing, rendered, tiled or clad.

The exposed edge of the slab must be kept clean and free of debris and regularly visually inspected for termite activity. QT EcoSeries Wall Panel does not hold any nutritional value for ants or rodents.

Windows

Wherever possible windows and associated flashings should be installed prior to the installation of the QT EcoSeries Wall Panel.

When ordering the window frame it is essential to plan where the window flange will be positioned either flush with the stud frame, flush with battens or even over the panel.

All materials that are susceptible to deterioration due to plastics migration or alkalinity of cement base products must be protected.

 

Decorative Mouldings

To provide added design flexibility, decorative mouldings or feature scan be made using QT EcoSeries Wall Panels. The panel can be cut into bands or laminate multiple layers and shape to achieve the desired profile. Once installed, a coating system would then be applied. Alternatively, a wide range of decorative mouldings are available from various manufacturers.

QT EcoSeries Wall Panels can be cut into bands that can be installed around windows, doors, along horizontal control joints, etc to enrich the aesthetics of the project. They are installed so the top and bottom edge (bevelled at 15 degrees) falls away from the wall. Where bandsmeet, they should be cut at a 45˚ angle, across the face of the corbel to help conceal the join and increase the adhered surface bond.

Bands are bonded into place with polyurethane foam and corbel screws or nails to mechanically fix the bands until the foam is set.

Doors

Door framing must be fixed in position prior to the installation of the QT EcoSeries Wall Panels. The door framing will allow the panel to be cut and installed neat but independent of the frame. Door frames must be fixed to the structural framing. Decorative moulding scan be used to emphasize the door opening.

All materials that are susceptible to deterioration due to plastics migration or alkalinity of cement base products must be protected.

Wall to Roof

Wall to roof details can often be unsightly as they are easily seen and hard to conceal without compromising the weather tightness of the dwelling. Because of its visibility, it is essential to create clean straight lines either by using a uPVC moulding or cover flashings.

Soffit & Eaves

The eaves or roof overhang play a significant role in the comfort performance of the building. Eaves or overhangs are used to shade the walls from the summer sun, while capturing the sun’s heat in the winter. Eaves will reduce glancing light, which highlights the wall surface. Glancing light is the light that is nearly parallel to the surface of the wall and casts visible shadows and uneven projections of the surface finish QT EcoSeries Wall Panels can be installed to suit various soffit designs and details.
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QT EcoSeries Finishing

Services

Ensure service pipes and wires are fixed or checked into the frame and not laid loose in the extended wall cavity. All materials that are susceptible to deterioration due to plasticiser migration must be protected (check with product manufacturer). Some PVC products or electrical cabling that penetrate the coating system and QT EcoSeries Wall Panel, require a conduit to ensure it is protected.

Copper pipes require a sleeve, conduit or tape to prevent contact with the wall panel.


Penetrations

Voids or gaps created by service penetrations through the exterior wall require weatherproofing and or waterproofing.

A commonmethod is to inject with expandable polyurethane foam and seal with a long lasting exterior gap sealant to make a weather tight seal. Where practical add a flange or decorative feature over the hole or penetration.

Sealants

Use an exterior grade weatherproof sealant for exterior wall construction and as a general-purpose gap filling.

Apply sealant in accordance to manufacturers recommendations. For a sealant to work effectively, the sealant must be applied as shown in the sketch below, Opening Width (D) x Depth (D/2) half the width.  Use backing rodas required.  Ensure surfaces are in good condition clean and free from oil, dust, loose materials including old sealant and release agents.

Apply masking tape to surfaces where contact with sealant is not required. Tape should be removed before sealant cures.  Smooth the surface of the sealant and ensure excess sealant is removed. Refer manufacturers curing or drying times before painting.

Heavy & Frequently Adjusted Fixtures:

Heavy items are not to be fitted directly to the QT EcoSeries WallPanel. They should have their own stand-alone supports or be tied to the supporting wall frame (eg. Clothes lines). Items subject to frequent handling (e.g. Flood-Lights and sensors) require a mounting plate, to be fixed across at least two or more frame studs to give long term fixing support.  The backing plate must be of a material that will offer, long-term weatherproof durability. If the internal lining is already installed, the mounting plate can be installed externally prior to the installation of the QT EcoSeries Wall Panel.

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QT EcoSeries Fire Rated Construction Details

Note: Prior to any firewalls being constructed it is essential that the builder consults with the project certifier to ensure that the certifier is aware of the firewall construction procedures and the certifier deems the installer competent.

Fire Resistance Level (FRL) is assessed by three performance measures:-Structural Adequacy / Integrity /Insulation eg 90/90/90.

FRL – 90 Mins. & External Fire Source

CSIRO Full-Scale Fire Test FS 3685/2695 has proven that the QT EcoSeries Wall System (shown right) is capable of achieving afire resistance of 113 minutes Integrity and 115 minutes Insulation when tested in accordance with AS1530.4. Therefore for the purpose of Building Regulations in Australia, the QT EcoSeries Wall System achieved a fire resistance level (FRL) of 90/90/90. The FRL is applicable for exposure to fire source from the tested side (QT EcoSeries Wall Panel side).

FRL – 90 Minutes

To achieve a 90 minute Fire Rating the wall must be constructed so as the wall consists of two layers of 13mm thick fire resistance plasterboard affixed to the timber frame internally and one layer of fire resistant building foil, one layer of 50mm QT EcoSeries WallPanel with a 5-8mm render applied with finish, affixed directly to a20-50mm battened out cavity. This system would be capable of achieving Fire Resistance Levels of -/90/90 for Non Load Bearing walls and 90/90/90 for Load Bearing Walls designed in accordance with AS1684 for fire exposure from either direction if tested in accordance with AS1530.4

Extended Wall Areas

The Fire Resistance Levels of 60 & 90 minutes would still apply to the same system extended in height in modular form provided that the structural members are designed in accordance with the relevant structural design code for the height and load of actual installation and an approved joint system appropriate to the FRL and the width of the gap is used for the horizontal and vertical joints in a manner as detailed in the attached drawings.

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QT EcoSeries Coating System

Coating /Rendering

The proprietary coating systems consist of polymer-modified cement renders, which must be finished with an acrylic texture and paint. The proprietary coatingmanufacturer’s instructions andapplication 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.

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 roof lines have a good clean bottom line. Check weep hole shave 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.

Application of a Polymer ModifiedRender 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 fora detailed description of application. Any proprietary coating system specified must meet or exceed the performance criteria of the BCA.

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QT EcoSeries Construction Detail

Slab & Floor

All foundations must comply with the relevant standards and local authority requirements, with appropriate consideration given to soil type. QT EcoSeries Wall Panel is suitable for construction on concrete slab or suspended floors.  The concrete slab can either be rebated or non-rebated.  The slab rebate will need to be a minimum of 50mm below floor level and 100mm above paved level or 150mm above ground level (See local standards).

To ensure a flush finish, the width of the slab rebate needs to allow for the thickness of the coating system, the thickness of the panel (40mm or 50mm), and the size of the extended wall cavity 20 – 50mm (30mm nom). Minimum ground clearances, must be maintained at all times during the life of the building. Insufficient clearance from the ground to the bottom of the wall panels will affect long-term durability.

Termites

The Building Code of Australia in conjunction with AS 3660 specifies the requirement for termite risk management. (See local standards).

The edge of a slab-on-ground may be used as a visual perimeter barrier. Provided that the slab edge is left exposed not less than 75mm above finished ground or paved level.

The face of the perimeter must not be concealed by a flashing, rendered, tiled or clad.

The exposed edge of the slab must be kept clean and free of debris and regularly visually inspected for termite activity. QT EcoSeries Wall Panel does not hold any nutritional value for ants or rodents.

Windows

Wherever possible windows and associated flashings should be installed prior to the installation of the QT EcoSeries Wall Panel.

When ordering the window frame it is essential to plan where the window flange will be positioned either flush with the stud frame, flush with battens or even over the panel.

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

Decorative Mouldings

To provide added design flexibility, decorative mouldings or featurescan be made using QT EcoSeries Wall Panels. The panel can be cut into bands or laminate multiple layers and shape to achieve the desired profile. Once installed, a coating system would then beapplied. Alternatively, a wide range of decorative mouldings are available from various manufacturers.

QT EcoSeries Wall Panels can be cut into bands that can be installed around windows, doors, along horizontal control joints, etc to enrich the aesthetics of the project. They are installed so the top and bottom edge (bevelled at 15 degrees) falls away from the wall. Where bands meet, they should be cut at a 45˚ angle, across the face of the corbelto help conceal the join and increase the adhered surface bond.Bands are bonded into place with polyurethane foam and corbelscrews or nails to mechanically fix the bands until the foam is set.


Doors

Door framing must be fixed in position prior to the installation of the QT EcoSeries Wall Panels. The door framing will allow the panel to be cut and installed neat but independent of the frame. Door frames must be fixed to the structural framing. Decorative moulding scan be used to emphasize the door opening.

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

Wall to Roof

Wall to roof details can often be unsightly as they are easily seen and hard to conceal without compromising the weather tightness of the dwelling. Because of its visibility, it is essential to create clean straight lines either by using a uPVC  moulding or cover flashings.


Soffit & Eaves

The eaves or roof overhang play a significant role in the comfort performance of the building. Eaves or overhangs are used to shade the walls from the summer sun, while capturing the sun’s heat in the winter. Eaves will reduce glancing light, which highlights the wall surface. Glancing light is the light that is nearly parallel to the surface of the wall and casts visible shadows and uneven projections of the surface finish QT EcoSeries Wall Panels can be installed to suit various soffit designs and details.

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QT EcoSeries Corners, Joints & Junctions

Internal & External Corners

Internal corners can be formed by continuing the QT FullMesh around the corner or by embedding a QT CornerMesh into the base coatrender. External corners can be formed by embedding a QT CornerMesh into the base coat render or by fixing a corner bead prior to rendering.

In all cases the abutting corner panels must be bonded with polyurethane foam adhesive.


Relief Joints

Relief joints are required to accommodate any structural movement or panel movement due to temperature or moisture changes. If the panel above or below an opening is less than 300mm in depth or more than 2400mm in length the panel must be articulated by creating a vertical expansion joint to reduce and/or relieve the stress in the panel and coating system. All other corner openings must be reinforced with QT45˚Mesh.The QT45˚Mesh helps prevent any 45˚hairline cracks forming from the corner of any opening.

Control joints

Control joints are designed to relieve structural movement between the wall cladding and building frame and also relieve any stress that builds up in the applied coating system. Vertical control joints are required at no greater than 5 metre centres (+ or – 500mm) in walls greater than 8metres in length. Double studs are required at all vertical control joints. Vertical joints are best aligned with windows, doors, openings, or internal corners. Where timber floor joists are used a 15mm (nom), horizontal control joint must be provided at floor levels to allow for shrinkage and movement of the joists. 10mm control joints must also occur where the QT EcoSeries Wall Panels meet alternative wall claddings eg.

Weatherboard, brickwork, etc. On gable ends, a horizontal control joint will be required at the top plate of the wall so as to separate the gable wall from the wall below. Control joints can be formed with the use of a backing rod and sealant or by the installation of uPVC expansion bead.

Junctions

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QT EcoSeries Installation and Fixing

Panel fixings

Fix the QT EcoSeries Wall Panel onto timber battens or metal channels with galvanised 75mm x 3.15 or 3.75mm ring shank nails (timber battens only) or 10g x 75mm Class 3 (AS3566) screws(timber or steel battens) with the addition of QT Buttons in all cases. Panel fixings must be no closer than 50mm but no further than 112mm to the horizontal panel edge and no closer than 50mm to the vertical edge, while normal fixing centres are at 225mm maximum centres. It is essential that the vertical and horizontal butt joints be bonded with polyurethane foam adhesive. Also ensure polyurethane foam adhesive is applied to all batten faces prior to the panel being pushed against them for maximum bonding to the support frame. Panels can be joined off stud, if glued to the abutting panel with polyurethane foam adhesive. QT EcoSeries Wall Panels can span 225mm as an unsupported cantilever.  Panels must span across a minimum of two channels or battens and must be installed in a horizontal stretcher bond pattern. To prevent corrosion from salt aerosols in high corrosion zones, (such as geothermal activity or within a 500m distance from the sea) upgrade fixing screws to class 4 or stainless steel (AS3566).

Framing

Timber framing must comply with AS 1684 and steel framing mustbe designed and constructed in accordance with AS 3623. Minimumdistances from end and edge of timber framing members must beobserved to avoid splitting. Stud spacing must not exceed 600mmcentres. Noggings must be fitted between studs at 1350mm maximumcentres.With a 1.8 m spirit level, check for variations in the frame that areover 6 mm. Large variations negatively affect weather protection orcan appear as visual defects under critical light conditions. If theframe is out of plumb, but not structurally defective, consult withthe builder or contractor for remediation.

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QT EcoSeries Wall Panel

Introduction

This technical manual covers the QT EcoSeries Wall Panel, a masonry veneer wall cladding system with a cavity. The QT EcoSeries Wall Panel is a masonry panel that offers a solid substrate, can provide a wide range of finishes, has high thermal insulation and sound abatement, fire resistance and ease of construction. QT EcoSeries Wall Panels are manufactured from a material called ‘Conpolcrete’ which consists of a blend of cement and recycled polystyrene. Patent Pending.

1Design

Material Properties

• 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).

 

 

 

 

 

 

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.

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

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.



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.

Fire Performance

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

Durability

In normal conditions and when maintained properly in a weatherproof 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 weep holes, 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.

Cavity

Cavities form an important role in the weather tightness 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.

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, weather tightness and thermal resistance. In its weather tightness 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.

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. Weep holes are also require din 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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QT Eco Series Benefits

Fire Resistance 

Fire Safe Benefit Icon

Safe and non-combustible
FRL 60/60/60 & 90/90/90.

Excellent Insulation

Insulation Icon

Thermal rating – all year comfort.

Environmentally Responsible

Environmentally Resposible Icon

Recycled polystyrene, low embodied energy.

Acoustic Performance

Sound Abatement Icon

Reduced exterior noise –
up to STC 61 or Rw61.

Lightweight

Insulation Icon

Easy to handle,
less manpower – 20kg/m2.

Weather-Tight

Weather-Tight Icon

Superior moisture management –
cavity construction.

Strength 

Strength Icon

Solid wall, secure and durable –

suitable for C3(W60C) – cyclonic

wind classification.

Attractive

Visual Appeal Icon

QT EcoSeries wall panel has a

wide choice of textures

and colours.

Efficiency

Efficiency Icon

Reduced construction time – less

scaffold hire, carpentry install,

no wet trades.

Cost Effective

Cost Effective Icon

QT EcoSEPARATE Fire Wall System

is one of the most economical

systems in today’s market place.

Award Winning

Award Icon

2003 Finalist Best New Product
2004 Special commendation – Environmental Product.

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NRG Greenboard Accessories

NRG Greenboard 40mm – 60mm – 75mm
Showing unique diagonal grooving system – Advantages better key for rendered surface, in addition to allowing the inner surface to breath against the sarking membrane.
6mm External Bead x 3000mm lengths
Application use for external corner and sunhoods.
3mm Render Bead
Application, used in composite construction i.e. fibrous cement, textured sheeting adjoins Greenboard finished surface.
15 Sill Bead x 40mm & 60mm width x 6mm build x 3000mm
Reveal Bead 40mm – 60mm – 75mm
width x 6mm build x 3600mm – Application, Window Reveals/Control Joints.
Starter Bead 40mm – 60mm – 75mm
width x 6mm build x 3000mm – Application, slab, high set, above roof.
Expansion Joint Bead x 6mm x 3000mm
Application, between floor levels and gables – horizontally, vertically wall areas and steps in floor levels as well as creating a ‘drip grove’ line in under side of NRG Sunhood.
Bostik PVC Primer 5077
Application, used to prime reveal beads prior to sealing against aluminium window this will prevent ‘roll-back’ of sealant in addition to providing a better bond for applying texture paint finish.
Adhesives & Sealant
Bostik Acrylic Adhesive ‘No More Nails’ used to bond Greenboard panels together, both horizontal and vertical edges.
Bostik Seal’n Flex – Application, sealing against aluminium window and door openings – expansion joints filler etc.
Stud Fixing & Washers
Timber Fixing and Metal Fixings 

N.B. Screws are to be Galvanised or Treated (Class 3).
All NRG PVC Washers and Fixings are required at 300mm. Maximum centres – Refer to Page 9 DWG 1.0.
Extreme environments – consideration should be given to the use of T316 Stainless Steel Fixings .

 

NRG Greenboard Timber Framing Treated CSK Ribbed Head Steel Framing Treated CSK Drill Point
40mm 10.8 x 60mm 55mm
60mm 10.8 x 80mm 75mm
75mm 10.8 x 95mm 90mm

Foam Adhesives
Application – Installation of both Sunhoods & Blades, ideal for filling minor chip corner etc.
Powers – Expanded Trigger Foam
Power(s) Foam Cleaner(s)x

Masonry Fixings
a simple but effective method of fixing Greenboard to masonry surfaces. 

NRG Greenboard Hilti IDP
Polypropylene Anchors
Hilti IDP Anchors
Maximum Fixing Centers
40mm 70mm Refer:- iv) above for
spacing details
60mm 90mm
75mm 110mm

NRG Greenbaord Mesh
Reinforced, alkali resistant, fibreglass 160g/m mesh.

NRG 3B Greenboard Reinforced Render
Modified polymer cement render. Just add water.

Sunhood & Blades Fixing
Sunhood & Blade Fixing
Galvanised Brackets
Coach Screws (Timber)
Anchor Bolts (Masonry)
Purlin Bolts (Steel)

Waterproofing Membrane
Apply over finished rendered surface to waterproof NRG Sunhoods … prior to application of texture paint finish.

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