4241FB FLASHMAN BEVELBORD ALUMINIUM CLADDING
1. GENERAL
This section relates to the supply and fixing of Flashman Flashing Systems Ltd Flashman Bevelbord profiled horizontal aluminium cladding complete with accessories. For use on new and existing residential and commercial projects.
It includes:
- for fixing on to timber or steel framing over a drained and ventilated cavity
- associated extruded flashing sections and components
1.1 RELATED WORK
Refer to 4821F FLASHMAN WINDOW AND DOOR FLASHINGS for window and door flashing systems.
1.2 ABBREVIATIONS
The following abbreviations are used throughout this part of the specification:
MDPE medium density polyethylene
Documents
1.3 DOCUMENTS
Refer to the general section 1233 REFERENCED DOCUMENTS. The following documents are specifically referred to in this section:
NZBC B2/AS1 Durability
NZBC E2/AS1 External Moisture
NZBC E2/VM1 External Moisture
AS/NZS 1170.2 Structural design actions - Wind actions
AS/NZS 2728 Prefinished/prepainted sheet metal products for interior/exterior building applications - Performance requirements
NZS 3404 Steel structures Standard - Materials, fabrication, and construction
NZS 3602 Timber and wood based products for use in building
NZS 3603 Timber Structures Standard
NZS 3604 Timber-framed buildings
AS/NZS 4534 Zinc and zinc/aluminium-alloy coatings on steel wire
AS/NZS 4600 Cold-formed steel structures
NASH Standard Residential & Low Rise Steel Framing, Part 1 Design Criteria
1.4 MANUFACTURER/SUPPLIER DOCUMENTS
Manufacturer's documents relating to this part of the work
Flashman Bevelbord technical drawings
Flashman Bevelbord Installation Guide
BRANZ Appraisal 573 - Flashman Window and Door Flashing System
Manufacturer/supplier contact details
Company: Flashman Flashing Systems Ltd
Web: www.flashman.co.nz
Email:
Telephone: 0800 55 66 00
Warranties
1.5 WARRANTY - MANUFACTURER/SUPPLIER
Provide a material manufacturer/supplier warranty:
15 years: For materials
15 years: For Dulux Duratec Powder Coating
10 years: For Dulux Duralloy
- Provide this product warranty on Flashman Flashing Systems Ltdstandard form.
- Commence the warranty from the date of completion of this part of the contract work.
Refer to the general section 1237 WARRANTIES for additional requirements.
1.6 WARRANTY - INSTALLER/APPLICATOR
Provide an installer/applicator warranty:
10 years: For installation
- Provide installation warranty on Flashman Flashing Systems Ltd Regional Distributor standard form and Product Warranty issued by Flashman Flashing Systems Ltd Head Office.
- Commence the warranty from the date of completion of this part of the contract work.
Refer to the general section 1237 WARRANTIES for additional requirements.
Requirements
1.7 QUALIFICATIONS
Installers to be experienced in the installation of Flashman Bevelbord Aluminium Cladding and approved by Flashman Flashing Systems Ltd. If requested provide evidence of qualification / experience prior to commencing work.
1.8 NO SUBSTITUTIONS
Substitutions are not permitted to the Flashman Bevelbord aluminium cladding system, components and associated products listed in this section.
1.9 VERIFY DIMENSIONS
Verify dimensions against site measurements prior to fabrication byFlashman Flashing Systems Ltd.
1.10 MAINTENANCE INFORMATION
Provide one bound copy of all relevant Flashman Bevelbord maintenance information on completion of the work.
1.11 COMPATIBILITY REQUIREMENTS
Each flashing material shall be selected in accordance with NZBC E2/AS1 Table 20 to minimise corrosion. Refer to either NZS 3604 Clause 4.2 or AS/NZS 2728 for the relevant exposure conditions. For compatibility of materials in contact and subject to run-off, refer to NZBC E2/AS1 table 21 and NZBC E2/AS1 table 22.
Compliance information
1.12 INFORMATION REQUIRED FOR CODE COMPLIANCE
Provide the following compliance documentation:
- Manufacturer's, importer's or distributor's warranty
- Installer's warranty
- Producer Statement - Construction from the installer
- Producer Statement - Construction Review from an acceptable suitably qualified person
- Other information required by the BCA in the Building Consent Approval documents.
Performance - Wind (design by contractor)
1.13 DESIGN PARAMETERS - NON SPECIFIC DESIGN
Design the installation to the wind zone parameters of NZS 3604, table 5.4.
Refer to general section 1220 PROJECT for details.
1.14 DESIGN PARAMETERS - SPECIFIC DESIGN
Design the installation to the wind pressure parameters of AS/NZS 1170.2.
Refer to general section 1220 PROJECT for details.
2. PRODUCTS
Materials
2.1 FLASHMAN BEVELBORD ALUMINIUM CLADDING
Tested to NZBC E2/VM1.
Flashman Bevelbord profiled metal cladding, manufactured from extruded 6063 T5 aluminium alloy, bevel back in profile, 165mm x 19.25mm x 2mm thick with a 135mm cover, supplied in lengths to suit the project. Profiles are supplied with a pre-applied powder coat finish.
2.2 FLASHMAN FLASHING SYSTEM
Refer to BRANZ Appraisal 573.
Flashman Window and Door Flashing System, extruded aluminium head, jamb and sill flashing sections complete with machined aluminium end caps for the head and sill extrusions, manufactured from 6063 T5 aluminium alloy. The flashing sections are supplied to site cut to length and are powder coated to match or contrast with the aluminium joinery. Flashman sills provide full support for aluminium windows and doors; support bars not necessary. Refer to 4821F FLASHMAN WINDOW AND DOOR FLASHINGS section for flashing sections that are part of the Flashman Bevelbord cladding system.
Components
2.3 BASE STARTER
Flashman Bevelbord base starter, 80mm x 8.86mm x 1.2mm thick extruded 6063 T5 aluminium alloy. Section powder coated, available in 6m lengths.
2.4 CAVITY STARTER
Flashman Bevelbord cavity starter, 1.3mm thick 3.6 metre lengths of extruded Grade T5 6060 aluminium with drain and vermin holes, powder coated black. 20mm batten sits flush with the vertical face of the cavity starter.
2.5 INTERNAL CORNER FLASHING
Flashman Bevelbord internal corner flashing, 94.2mm x 94.2mm x 1.4mm thick extruded 6063 T5 aluminium alloy. Section powder coated, available in 6m lengths.
2.6 INTERNAL 45 DEGREE CORNER FLASHING
Flashman Bevelbord 45° corner flashing, 93mm x 1.2mm thick extruded 6063 T5 aluminium alloy. Section powder coated, available in 6m lengths.
2.7 EXTERNAL CORNER FLASHING
Flashman Bevelbord external corner flashing, 89mm x 89mm x 1.4mm thick extruded 6063 T5 aluminium alloy. Section powder coated, available in 6m lengths.
2.8 SOFFIT DADO
Flashman Bevelbord soffit dado, 55mm x 15mm x 1.2mm thick extruded 6063 T5 aluminium alloy. Section powder coated, available in 6m lengths.
2.9 COVER MOULD
Flashman Bevelbord cover mould, 50mm x 29.4mm x 1.2mm thick extruded 6063 T5 aluminium alloy. Section powder coated, available in 6m lengths.
2.10 J MOULD
Flashman Bevelbord J mould, 43.2mm x 20.45mm x 1.2mm thick extruded 6063 T5 aluminium alloy. Section powder coated, available in 6m lengths.
2.11 HEAD TRIM AND CLIP
Flashman Bevelbord head trim and clip, 38mm x 30mm x 2mm thick adjustable head trim and 32.75mm x 7.1mm head trim clip, extruded 6063 T5 aluminium alloy. Sections powder coated, available in 6m lengths.
2.12 HEAD FLASHING
Flashman Bevelbord head flashing, 1.3mm thick extruded aluminium alloy incorporating a cavity vent strip punched with 5mm diameter holes complying with NZBC Acceptable Solution E2/AS1, 9.1.8.3.
2.13 JAMB FLASHING
Flashman Bevelbord 2-part jamb flashing, extruded 6063 T5 aluminium alloy, made in different sizes. Powder coat finish, available in 6m lengths.
2.14 SILL FLASHING AND SILL BEAD
Flashman Bevelbord Slimline Sill flashing and sill bead, extruded 6063 T5 aluminium alloy. Powder coat finish, available in 6m lengths.
2.15 SILL END CAPS
Flashman Bevelbord sill end cap, 8mm aluminium plate, engineered for a tight friction fit. Powder coated to match the sill.
2.16 BOARD JOINTER
Flashman Bevelbord extruded aluminium two piece vertical jointer for jointing lengths of cladding. Powder coat finish available in 5m lengths.
2.17 MITRE SOAKER
Flashman Mitre Soaker, folded from 0.55mm Grade 5005 aluminium, 5mm degree slope to exterior with outer edge to overhang the cladding line by 15mm. The mitre soakers are supplied 140mm long and are available in left and right hand orientations.
2.18 FLASHINGS - PARAPET/ INTER-STOREY
Folded from aluminium to the same standards as the Flashman Bevelbord cladding profiles.
2.19 FLASHMAN BEVELBORD FIXINGS - TIMBER FRAME
50mm long, 8-gauge, Grade 304 stainless steel wood screws (for installation over 20mm cavity).
2.20 FLASHMAN BEVELBORD FIXINGS - STEEL FRAME
Cavity batten and thermal break fixings to be self drilling 8 gauge or 10 gauge galvanized steel screws. Screw length must allow a minimum 10mm penetration through the steel frame.
2.21 PROFILED FOAM INSERTS
Closed-cell polyethylene foam inserts matched to the cladding profile. Inserts used at vertical details in horizontal cladding applications to create a weather resistant seal.
2.22 FOAM TAPES
Closed-cell PVC foam tapes, adhesive on one side. Various sizes of tapes are used for specific applications.
Accessories - supplied by approved installer
2.23 CAVITY BATTEN BARRIER STRIP
60mm wide medium density polyethylene (MDPE) tape supplied in rolls.
To comply with NZBC E2/AS1, table 23, separates aluminium components and accessories from timber battens treated with copper based treatments in NZS 3604.
2.24 FIXINGS
65mm x 2.87mm hot-dip galvanized gun nails.
Accessories - supplied by contractor
2.25 WALL UNDERLAY
Heavy weight fire retardant breather type Kraft paper laminates or wall underlay, to NZBC E2/AS1, table 23, for use as wall underlay.
2.26 WALL UNDERLAY SUPPORT
Polypropylene strap, 75mm galvanized mesh, galvanized wire or additional vertical battens for securing the wall underlay in place. Mesh and wire galvanizing to AS/NZS 4534.
2.27 THERMAL BREAK - STEEL FRAME
Expanded polystyrene (EPS) to NZBC E3/AS1, Paragraph 1.1.4(d).
2.28 FLEXIBLE SILL AND JAMB FLASHING TAPE
Flexible flashing tapes complying with NZBC E2/AS1, paragraph 4.3.11 or flexible flashing tapes complying with NZBC E2/AS1, paragraph 4.3.11, or flexible flashing tapes covered by a valid BRANZ Appraisal for use around window and door joinery openings.
2.29 WINDOW AND DOOR TRIM CAVITY AIR SEAL
Air seals complying with NZBC E2/AS1, paragraph 9.1.6, or self-expanding, moisture cure polyurethane foam air seals covered by a valid BRANZ Appraisal for use around window and door penetrations.
2.30 CAVITY BATTENS
Nominal 50mm wide by 25mm thick (minimum finished size of 45mm wide by 20mm thick) timber treated to H3.1, or cavity battens covered by a valid BRANZ Appraisal for use as a cavity batten system behind wall claddings.
2.31 CAVITY BATTEN FIXINGS - TIMBER FRAME
40mm x 2.5mm flat head hot-dip galvanized nails, or minimum 50mm x 2.87mm hot-dip galvanized gun nails.
2.32 CAVITY BATTEN FIXINGS - STEEL FRAME
Self-drilling 8 gauge or 10 gauge galvanized steel screws.
2.33 FLEXIBLE SEALANT
Flexible sealant to NZBC E2/AS1, or sealant covered by a valid BRANZ Appraisal for use as a weather sealing sealant for exterior use.
3. EXECUTION
Conditions - general
3.1 DELIVERY
Keep claddings and flashings dry in transit. Take delivery of cladding in an undamaged condition. Reject all damaged materials.
3.2 STORAGE
Store Flashman Bevelbord cladding and accessories on a level, firm base, off the ground, in dry conditions, well ventilated, out of direct sunlight and completely protected from weather and damage. Ensure storage areas are away from current work areas. Cover to keep dry until fixed. Take care to avoid damage to powder coated surfaces.
3.3 HANDLING
Avoid distortion and contact with potentially damaging surfaces/substances. Do not drag claddings and flashings across each other, or across other surfaces. Protect edges, corners and surfaces from damage.
3.4 SUBSTRATE
Do not commence work until the substrate is of the standard required by the Flashman Bevelbord installer for the specified claddings and flashings, level and in true alignment.
3.5 PROTECT
Protect surfaces, window and door joinery, and finishes already in place, from the possibility of damage during the installation process.
3.6 CONFIRM LAYOUT
Before commencing work confirm the proposed installation of the cladding, flashings and expansion joints and other visual considerations of the finished work.
3.7 CO-ORDINATE INSTALLATION
Co-ordinate installation of cladding and flashings with associated trades.
Conditions - substrate
3.8 TIMBER TREATMENT
Check timber wall framing behind the Flashman Bevelbord aluminium cladding cavity system is treated to NZBC B2/AS1 and NZS 3602.
3.9 TIMBER FRAMING
Check timber framing is to NZS 3604. . Check that studs are at maximum 600mm centres and dwangs are flush between the studs at maximum 800mm centres. Buildings or parts of buildings outside the scope of NZS 3604 must be a specific design in accordance with NZS 3603 and AS/NZS 1170.2.
Check that additional framing has been provided at soffits, internal and external corners, vertical joints and window and door openings for the support and fixing of Flashman Bevelbord.
Modify the clause to suit project specified. Where specific design is required the framing must be of at least equivalent stiffness to the framing provisions of NZS 3604.
3.10 TIMBER FRAMING - MOISTURE CONTENT
Ensure timber framing and cavity battens have a maximum moisture content of 24% at the time of the cladding installation.
3.11 STEEL FRAMING
Check compliance with NASH Standard - Residential & Low Rise Steel Framing, Part 1 Design Criteria, NZS 3404 and AS/NZS 4600.
Check minimum framing specification is 'C' section studs and nogs of overall section size of 75mm web and 32mm flange. Steel thickness must be minimum 0.55mm. Check studs are at maximum 600mm centres. Install thermal break to Flashman Bevelbord requirements.
3.12 INTER-STOREY JUNCTIONS
Check inter-storey drained joints for walls over two storeys in height are in accordance with NZBC E2/AS1, 9.1.9.4(b) Inter-storey junctions.
Installation - by contractor
3.13 WALL UNDERLAY AND FLEXIBLE SILL AND JAMB TAPE INSTALLATION
Install wall underlay and flexible sill and jamb tape system in accordance with the wall underlay and tape manufacturer's instructions prior to the installation of cavity battens and Flashman Window and Door Flashing System.
Install wall underlay horizontally and continuous around corners. Lap the underlay 75mm minimum at horizontal joints and 150mm minimum over studs at vertical joints in accordance with underlay manufacturer's requirements.
3.14 INSTALL CAVITY BATTENS -TIMBER FRAME
Install over wall underlay to the wall framing at a maximum 600mm centres where the studs are maximum 600mm centres or at 400mm centres where the studs are at 400mm centres. Fix using 40mm x 2.5mm hot dipped galvanized flat head nails at maximum 800mm centres.
Note: Fix battens to cladding only, installation of battens behind the Flashman Window and Door Flashing System is the responsibility of the approved installer.
Proprietary batten systems can be used as an alternative to treated timber battens. Battens may need to extend below bottom plate to support starter strip. Refer to Flashman Bevelbord Installtion Guide for details or drawings on the Flashman Bevelbord website, www.flashman.co.nz.