0431 PracticaMMC in cladding – combined
ENCLOSURE
0431 PRACTICAMMC IN CLADDING – COMBINED
1
GENERAL
1.1
RESPONSIBILITIES
General
General: Provide lightweight external wall cladding and associated work as documented and as
follows:
- Satisfies the product performance requirements.
1.2
COMPANY CONTACTS
PracticaMMC Australia technical contacts
Website: www.practicammc.com.au
1.3
CROSS REFERENCES
General
Requirement: Conform to the following worksection(s):
- General requirements.
- [complete/delete]
1.4
MANUFACTURER’S DOCUMENTS
Technical manuals
MasterWall product specification and installation manual: www.masterwall.com.au/downloads.pdf
MasterWall Product MSDS: www.masterwall.com.au/downloads/MSDS.pdf
MasterWall K-Series installation and construction detail manual:
www.practicammc.com.au/brands_kseries.htm
MasterWall K-Series Architectural specifications manual:
www.practicammc.com.au/brands_kseries.htm
MasterWall K-Series MSDS:
masterwall.com.au/techcentre_downloads.htm
1.5
INTERPRETATION
Abbreviations
General: For the purposes of this worksection the following abbreviations apply:
- AAC: Autoclaved aerated concrete.
- EIFS: External insulated finishing system.
1.6
INSPECTION
Notice
Inspection: Give notice so that the framing, sarking, vapour barrier and insulation may be inspected
before they are covered up or concealed.
1.7
SUBMISSIONS
Execution details
Seamed sheet metal cladding: Submit evidence of experience with non-ferrous cladding installation.
Samples
Finish: Submit samples of the cladding material showing the range of variation available.
Subcontractors
General: Submit names and contact details of proposed suppliers and installers.
Evidence of experience: [complete/delete]
Tests
Type tests: Submit results, as follows:
- Metal cladding general tests: Sheeting and fastenings to AS 1562.1 for resistance to wind pressure.
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- Metal cladding in cyclonic regions to AS/NZS 1170.2: Metal cladding and fastenings to AS 1562.1
clause 5.6.
- Fibre cement cladding: Type test the wall sheeting and fixings to AS/NZS 1562.2 for resistance to
wind forces.
2
PRODUCTS
2.1
GENERAL
Product substitution
Other cladding systems: Conform to PRODUCTS, GENERAL, Substitutions in the General
requirements worksection.
2.2
MARKING
Identification
General: Deliver materials to the site in PracticaMMC’s original sealed containers or packaging legibly
marked to show the following:
- Manufacturer’s identification.
- Product brand name.
- Product type.
- Quantity.
- Product reference code and batch number.
- Date of manufacture.
- Material composition and characteristics such as volatility, flash point, light fastness, colour and
pattern. Provide technical data sheets if not shown on labels.
- Handling and installation instructions.
- Material safety data sheets.
2.3
PRACTICAMMC EIFS CLADDING SYSTEMS
MasterWall insulated external wall system
Description: An external lightweight, reinforced insulating polystyrene wall panel, mechanically fixed to
the outer face of the building, either direct to frame or to masonry or concrete substrate. The complete
system includes the application of approved acrylic render systems, frame wraps, trims, sealants and
opening flashings at openings that combine to create a weather-tight building envelope.
System:
- Panel size: 2400 x 1200 mm.
- Panel thickness: [complete/delete]
- Fixings: Class 3 corrosion resistant screws to AS 3566.2 and 50 mm MasterWall plastic buttons.
Screw length and type selected to suit panel thickness and framing with 25 mm minimum
penetration to framing.
- Sealant: Polyurethane, liquid or flexible foam sealant.
- Reinforcing tape: Alkaline-resistant fiberglass mesh, 145 gm/m 2.
- Vapour permeable (breathable) membrane: MasterWall Breathable Wall Wrap.
- Flashing tape: MasterWall Flashing Tape - Adhesive, Aluminium.
MasterWall K-series insulated external wall system
Description: A lightweight, reinforced, insulating external cladding system comprising Kooltherm dense
grade, fire-resisting foam core panels. The standard panels are prefinished on one side with a flexible
fibreglass tissue facing material. The system is designed with a ‘whole of envelope’ approach as either
a direct to frame or to masonry or concrete substrate. The facing is compatible with approved acrylic
render and decorative finishes.
System:
- Panel size: 2270 x 1200 mm.
- Panel thickness: [complete/delete]
- Vapour permeable (breathable) membrane: MasterWall Breather Frame Wrap.
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- Fixings: Class 3 corrosion resistant screws to AS 3566.2 and MasterWall 40 mm plastic buttons.
Screw length and type selected to suit panel thickness and framing.
- Flashing tape: MasterWall Flashing Tape - Adhesive, Aluminium.
- Reinforcing mesh: Alkaline-resistant fiberglass mesh, 145 gsm.
- Sealant: Polyurethane, liquid or flexible foam sealant.
2.4
SHEET METAL CLADDING
Standards
Design and installation: To AS 1562.1.
Prepainted and organic film/metal laminate products: To AS/NZS 2728.
Cladding product
Product brand: [complete/delete]
Profile: [complete/delete]
Product material type: [complete/delete]
Thickness: [complete/delete]
Colour: [complete/delete]
Location: [complete/delete]
Lead time: [complete/delete]
2.5
HARDBOARD PLANKS
Wet-processed fibreboard (including hardboard)
Standard: To AS/NZS 1859.4.
Classification: [complete/delete]
Bending strength: [complete/delete]
Plank cladding
Type: A proprietary system of hardboard planks.
Product: [complete/delete]
Lead time: [complete/delete]
Texture: [complete/delete]
Width x length (mm): [complete/delete]
Plank thickness: 9.5 mm.
Joints and edges: PVC extrusion.
External corners: Preformed metal joining pieces.
Internal corners: Scribe.
2.6
FIBRE CEMENT PLANKS
Fibre cement
Standard: To AS/NZS 2908.2.
Plank cladding
General: Provide a proprietary system of single faced fibre cement building planks.
Product: [complete/delete]
Lead time: [complete/delete]
Texture: [complete/delete]
Width x length (mm): [complete/delete]
Plank thickness: 7.5 mm.
Joints and edges: UPVC extrusion.
Corners: Preformed metal joining pieces.
2.7
TIMBER WEATHERBOARDS
Timber
Hardwood: To AS 2796.1.
- Grade to AS 2796.2: [complete/delete]
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Seasoned cypress pine: To AS 1810.
- Grade: [complete/delete]
Softwood: To AS 4785.1.
- Grade: To AS 4785.2: [complete/delete]
Boards
Timber species: [complete/delete]
Profile: [complete/delete]
Thickness (mm): [complete/delete]
Width (mm): [complete/delete]
Finish: [complete/delete]
2.8
FIBRE CEMENT CLADDING
Fibre cement
Standard: To AS/NZS 2908.2.
Cladding, eaves and soffit linings: Type A Category 3 (modulus of rupture ≥ 7 MPa).
Compressed cladding: Type A Category 5 (modulus of rupture ≥ 18 MPa).
- Edges: Square.
Sheet cladding
General: Provide a proprietary system of single faced fibre cement sheets.
Arrangement: Set out in even panels with joints coinciding with framing.
Texture: [complete/delete]
Width x length (mm): [complete/delete]
Sheet thickness: 6 mm.
Joints, corners and edges: UPVC extrusion.
Eaves and soffit lining
Sheets: Single faced fibre cement.
Sheet thickness: 4.5 mm.
Joints: UPVC extrusion.
Perforations: [complete/delete]
2.9
COMPRESSED FIBRE CEMENT CLADDING
Flat panels
Sheet thickness: [complete/delete]
General: Smooth even edges free of imperfections such as chips, cut to suit the layout, allowing for a
joint gap 10 mm wide between panels.
Finish: [complete/delete]
Framing
Cladding support system: Metallic-coated steel:
- Vertical members: [complete/delete]
. Spacing: [complete/delete]
- Horizontal members: [complete/delete]
. Spacing: [complete/delete]
Screws
General: As recommended by the cladding system supplier.
2.10 COMPRESSED FIBRE CEMENT CLADDING SYSTEMS
Cladding system
Product: [complete/delete]
Lead time: [complete/delete]
Cladding material: [complete/delete]
Thickness: [complete/delete]
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Finish: [complete/delete]
Framing
Cladding support system: Metallic-coated steel:
- Vertical members: [complete/delete]
. Spacing: [complete/delete]
- Horizontal members: [complete/delete]
. Spacing: [complete/delete]
Fixings
General: As recommended by the cladding system supplier.
Components
Edge trims: [complete/delete]
Control joints: [complete/delete]
Flashing: [complete/delete]
Cladding components:
- Sills: [complete/delete]
- Reveals: [complete/delete]
- Corner returns: [complete/delete]
2.11 ALUMINIUM COMPOSITE PANELS
Panels
Material: A composite consisting of two aluminium cover sheets over a plastic core.
Thickness: [complete/delete]
Finish: [complete/delete]
2.12 COMPOSITE SANDWICH PANELS
Panel cladding
Type: A proprietary system panels comprising pre finished steel skins continuously laminated over an
expanded fire-resisting core.
Product: [complete/delete]
Lead time: [complete/delete]
Profile: [complete/delete]
Core material: [complete/delete]
Finish: [complete/delete]
Colour: [complete/delete]
Panel thickness: [complete/delete]
Panel joints and control joints: Integral to the panel system.
2.13 AAC CLADDING
Panel cladding
Type: A proprietary system of aerated autoclaved cement (AAC) panels.
Class or product designation: [complete/delete]
Panel thickness: [complete/delete]
Joints: Thin bed adhesive.
Control joints: At all external and internal corners, adjacent to all openings and at maximum 6 m
centres.
2.14 PLYWOOD CLADDING
Plywood and blockboard
Exterior use: To AS/NZS 2271.
Presealed plywood: Plywood presealed both sides and edges with a machine applied sealer.
Visible surfaces with a clear finish: Veneer quality A.
Other visible surfaces: Veneer quality B.
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Bond: Type A.
Back veneer: Veneer quality C or D.
Thickness: [complete/delete]
Finish: [complete/delete]
Certification
General: Brand panels under the authority of a recognised certification program applicable to the
product. Locate the brand on faces or edges which will be concealed in the works.
2.15 PLASTIC CLADDING
Materials
Unplasticised polyvinyl chloride (uPVC) sheet: To AS 4256.4.
Glass fibre reinforced polyester (GRP) sheet: To AS 4256.3.
Polycarbonate: To AS 4256.5.
Class or grade: [complete/delete]
Type: [complete/delete]
Profile: [complete/delete]
Colour: [complete/delete]
Fire performance: [complete/delete]
2.16 SEAMED SHEET METAL CLADDING
Type
Description: Seamed sheet metal roofing laid on flush finished continuous plywood decking over an
underlayer and separation layer.
Plywood sheeting
Surface grade: DD to AS/NZS 2269.0.
Bond: Type A.
Thickness: 19 mm.
Underlayer
Description: Self-adhesive, rubberized asphalt/polyethylene waterproofing membrane.
Separation layer
Description: Fire-resisting mat of a nylon core of fused entangled filaments.
Sheeting
Material: [complete/delete]
Minimum thickness: [complete/delete]
Profile: Roll form sheeting into pan profiles for forming into seamed joints.
Width between seams: [complete/delete]
Flat lock tiles
Product: [complete/delete]
Material: [complete/delete]
Accessories
Solder: 40% tin: 60% lead soft solder.
Flux: Z-04-S.
Sealant: 100% natural cure non-acid based silicone rubber to match roofing.
Fixings: Provide starter clips, fixing clips and fastenings as recommended by the roofing system
supplier.
2.17 COMPONENTS
Flashings
Standard: To AS/NZS 2904.
Material: [complete/delete]
Finish: [complete/delete]
Colour: [complete/delete]
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3
EXECUTION
3.1
TOLERANCES
Permitted deviations
Metal sheet cladding: To AS 1562.1 clause 4.2.
Other sheet cladding: 5 mm from a 1.8 m straightedge.
Cladding panels: To manufacturer's recommendations.
Cladding planks: 5 mm from a 1.8 m straightedge.
Pre-assembled cladding systems: To manufacturer's recommendations.
3.2
CONSTRUCTION GENERALLY
Substrates or framing
Requirement: Before fixing cladding check and, if necessary, adjust the alignment of substrates or
framing.
Fixing
Method: Nail to timber framing, screw to steel framing.
Accessories and trim
Requirement: Provide accessories and trim necessary to complete the installation.
Fixing eaves and soffit lining
Nailing: 150 mm centres to bearers at maximum 450 mm centres.
Metal separation
Requirement: Prevent direct contact between incompatible metals, and between green hardwood or
chemically treated timber and aluminium or coated steel, by either:
- Applying an anti-corrosion, low moisture transmission coating to contact surfaces.
- Inserting a separation layer.
3.3
PROPRIETARY SYSTEMS OR PRODUCTS
Installation
Product fixings: Fix the following proprietary systems in conformance with the current written
recommendations and instructions of the manufacturer or supplier:
- Hardboard plank cladding
- Fibre cement plank cladding.
- Composite sandwich panels.
- Fibre cement cladding.
- Compressed fibre cement cladding.
- Complete cladding systems.
- Aluminium sandwich panel cladding systems.
- PracticaMMC EIFS cladding systems.
3.4
PRACTICAMMC EIFS CLADDING SYSTEMS
MasterWall insulated external wall system
Installation: To the MasterWall Specification and Installation Manual.
MasterWall K-series insulated external wall system
Installation: To the MasterWall K-Series Specification and Installation Manual.
3.5
SHEET METAL CLADDING
Cladding sheet installation
Fixing start location: [complete/delete]
Swarf: Remove swarf and other debris as soon as it is deposited.
Accessories: Provide material with the same finish as cladding sheets.
Expansion joints: [complete/delete]
Corner flashing
Requirement: Finish off at corners with purpose-made folded flashing strips.
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3.6
TIMBER WEATHERBOARD CLADDING
Preparation
Preservative treatment: For cladding with a natural or stained finish, prefinish the boards by dipping or
brushing with water repellent preservative. Do not apply preservative if this is incompatible with a
specified pigmented stain finish.
Preservative: [complete/delete]
Cut surfaces: Treat freshly cut surfaces with water repellent before fixing.
Installation
Single lengths: Provide single lengths when installed vertically. Whenever possible provide single
lengths of boards when installed horizontally.
Fixing at crossings:
- Seasoned milled weatherboards: 2 fixings.
- Unseasoned hardwood, sawn weatherboards, or secret nailed profiles: 1 fixing.
Nails:
- Hot dip galvanized to non-corrosive timbers.
- Silica bronze or stainless steel to corrosive timbers (including western red cedar or redwood).
Nailheads: Treat visible nailheads as follows:
- In stained or clear finishes: Drive flush.
- In opaque finishes: Punch below the surface and fill flush with putty after the surface has been
primed.
Joints
Overlapping joints: Lap boards at least 30 mm.
End grain joints: Install boards so that butt joints are in compression.
Internal and external corners: Butt against a stop bead of thickness at least that of the cladding.
3.7
COMPRESSED FIBRE CEMENT (CFC) CLADDING
Joints - CFC backed
Horizontal joints: Epoxy bond a backing strip of compressed fibre cement, 4.5 mm thick, to the rear
face of the panel. Seal the joint with an 8 mm triangular section epoxy fillet.
Vertical joints: Backing strip as for horizontal joints. Seal the joint gap with two continuous beads of
sealant, or with a twin-bulb neoprene gasket.
- Strip width ( mm): [complete/delete]
Joints - Colorbond backed
Horizontal joints: Proprietary Colorbond steel backing strip fixed to the rear face of the panel with
adhesive tape horizontal gasket. Seal the joint with a 3 mm epoxy fillet.
Vertical joints: Proprietary top hat framing and adhesive gasket.
Intermediate supports - CFC backed
Fixing: At intermediate supports fix through a packing strip of high density fibre cement 4.5 mm thick,
epoxy bonded to the rear face of the panels.
Intermediate supports - top hat backed
Fixing: Screw fix to proprietary top hat intermediate frame.
Fixing
Drilling: Pre-drill the panels oversized with proprietary drill bits for screw fixings and countersink so that
the top of the screw is 2 – 3 mm below the surface.
Fixing centres: As nominated by the cladding system supplier.
Finish: Stop screw heads with epoxy filler smoothed and levelled upon application and sanded flush
after curing.
3.8
COMPRESSED FIBRE CEMENT CLADDING SYSTEMS
Joints
Panel edge treatment: [complete/delete]
Joint method: [complete/delete]
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Cladding support
Structural framing: [complete/delete]
Joint fixing centres: [complete/delete]
Fixings: [complete/delete]
3.9
ALUMINIUM COMPOSITE PANELS
Joints
Panel edge treatment: [complete/delete]
Joint method: [complete/delete]
Cladding support
Structural framing: [complete/delete]
Joint fixing centres: [complete/delete]
Fixings: [complete/delete]
3.10 PLYWOOD CLADDING
Preparation
General: Seal all cut edges and place uppermost. Prime or pre-coat bottom edges.
Installation
Layout: Starting at a corner lay sheets to place laps facing away from prevailing weather.
Movement:
- Allow minimum 2 mm gaps between sheets. If square edges apply elastomeric sealant.
- Allow 5 mm gap between the bottom of sheets and flashings and profile flashings to avoid moisture
traps.
Fixing
Edges: Seal edges before fixing.
Fixings for 12 mm thick plywood:
- Nails in timber frames: 40 x 2.5 mm.
- Screws in timber frames: No. 8 x 40 mm.
- Screws in 1.5 mm steel frames: 10 gauge – 16 thread pitch x 45 mm.
- Screws in 2.8 mm steel: 10 gauge – 16 thread pitch x 45 mm.
Fixings materials:
- LOSP treated timber and non-corrosive timber cladding: Hot dipped galvanized steel.
- CCA treated timber and corrosive timber cladding (including western red cedar or redwood):
Stainless steel grade 316 or silicon bronze.
3.11 PLASTIC CLADDING
Installation
Standard: To AS 1562.3.
Fixing: [complete/delete]
3.12 SEAMED SHEET METAL CLADDING
Plywood decking
Installation: Lay the length of the sheets at right angles to the supports. Stagger the end joints and
locate them centrally over framing members. If panels are not tongue and grooved provide noggings
or trimmer joists to support the edges.
Fixing: 300 mm centres to each support:
- Timber: Adhesive and nail.
- Steel: Metallic-coated self drilling/tapping screws with the heads finishing below the surface.
Control joints: 12 mm gap at abutting building elements.
Fabrication
Off site: Basic trays.
Minimum bending radius: 1.75 mm.
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Fixing
Method: Fix pans to the deck with concealed clips at 250 mm maximum centres.
Seams
Walls: Single angle standing seams.
3.13 AAC CLADDING
Panel cladding
General: Provide a proprietary system of AAC panels.
Joints: Thin bed adhesive, to the recommendations of the AAC manufacturer.
Control joints: At all external corners, adjacent to all openings and at maximum 6 m centres.
3.14 COMPLETION
Warranties
Cladding materials: Submit the manufacturer's published product warranties.
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