Jan 12

QT 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 must be designed and constructed in accordance with AS 3623. Minimum distances from end and edge of timber framing members must be observed to avoid splitting. Stud spacing must not exceed 600mm centres. Noggings must be fitted between studs at 1350mm maximum centres.
With a 1.8 m spirit level, check for variations in the frame that are over 6 mm. Large variations negatively affect weather protection or can appear as visual defects under critical light conditions. If the frame is out of plumb, but not structurally defective, consult with the builder or contractor for remediation.

Clip and Channel System

Mechanically fix clips at 600 centres in both directions with 2 – 12g x 25mm Class 3 (AS3566) screws into face of stud. Select appropriate slot and engage channel, ensuring channel is plumb.

Wind
Classification
(AS4055)
Channel
w x d (mm)
Framing
StudCentres
Maximum
Clip
FixingCentres
(mm)
N1 (W28N), N2 (W33N),
N3 (W41N) and C1 (W41C)
45 x 16 or 28 600mm 600mm
N4 (W50N), N5 (W60N),
C2 (W50C) and C3 (W60C)
45 x 16 or 28 450mm 600mm

Steel Battening System – 40mm Top Hat

Fixing 40mm Metal Battens onto timber studs

Wind
Classification
Batten Spacing at 600 crs Batten Spacing
at 450 crs
0.55 BMT 0.75 BMT 0.55 BMT
N2 (W33N) 2/3.06×65 DSN 2/3.06×65 DSN 2/3.06×65 DSN
N3 (W41N) 2/3.06×65 DSN 2/3.06×65 DSN 2/3.06×65 DSN
N4 (W50N) 2/3.75×65 DSN 2/3.75×65 DSN 2/3.75×65 DSN
N5 (W60N) 2x Type 17 8-15x25mm Pan 2x Type 17 8-15x25mm Pan
N6 (W70N) 2x Type 17 8-15x25mm Pan

DSN = DEFORMED SHANK NAILS

NOTE: For fixing 40mm top hat battens to steel framing 2/10-16×16 self drilling hex head
screws for each connection to top plate, bottom plate and nogging is all that is required for
all wind categories.

Timber Batten System

Mechanically fix H3 treated timber battens to stud with 75mm gun framing nails or 75 x 3.15 or 3.75 ring shanked nails. Galvanised nails are required in H3-CCA treated battens. H3-LOSP treated battens are considered non corrosive.

WindClassification(AS4055) TimberBattenwxd (mm) Framing StudCentresMaximum Batten FixingNail Centres(mm)
N1 (W28N), N2 (W33N),N3 (W41N) and C1 (W41C) 45 x 20 600mm 400mm
N1 (W28N), N2 (W33N),N3 (W41N) and C1 (W41C) 45 x 21-50 600mm 300mm
N4 (W50N), N5 (W60N),C2 (W50C) and C3 (W60C) 45 x 20 450mm 300mm
N4 (W50N), N5 (W60N),C2 (W50C) and C3 (W60C) 45 x 21-50 450mm 200mm

find out more

Jan 11

QT 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 Moulding

To provide added design flexibility, decorative mouldings or features can be made using QT To provide added design flexibility, decorative mouldings or features can 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. To provide added design flexibility, decorative mouldings or features can 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.

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.

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 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.

Window Head Type 1

 Window Head Type  2

 Doors

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).

Wall to Roof

Wall to roof details can often be unsightly as they are easily seen and hard to conceal without compromising the weathertighness 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.

 

find out more

Jan 11

QT Finishing

Service

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 common method 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 rod as 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 Wall Panel. 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 longterm 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.

find out more

Jan 11

QT Product Information

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 TEcoSeries 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.

find out more