4241Fd Flashman Dualbord Aluminium Cladding

4241FD FLASHMAN DUALBORD ALUMINIUM CLADDING

1. GENERAL

This section relates to the supply and fixing of Flashman Flashing Systems Ltd DualBord profiled horizontal and vertical 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 AND DEFINITIONS

Refer to the general section 1232 INTERPRETATION & DEFINITIONS for abbreviations and definitions used throughout the specification.

The following abbreviations apply specifically to this section:

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 and supplier's documents relating to this part of the work:

Flashman DualBord technical drawings

Flashman DualBord Installation Guide

BRANZ Appraisal 573 - Flashman Window and Door Flashing System

BRANZ Appraisal 800 - Flashman BevelBord and DualBord cavity cladding system (for horizontal cladding only)

BRANZ Appraisal 829 - Flashman DualBord vertical weatherboard cladding 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 DualBord materials

15 years For Dulux Duratec Powder Coating

10 years For Dulux Duralloy

- Provide this warranty on the Flashman Cladding and Flashing Systems Ltd standard form.

- Commence the warranty from the date of practical completion of the contract works.

Refer to the general section 1237 WARRANTIES for additional requirements.

1.6 WARRANTY - INSTALLER/APPLICATOR

Provide an installer/applicator warranty:

10 years: For DualBord 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 DualBord 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 DualBord aluminium cladding system, components and associated products listed in this section.

1.9 VERIFY DIMENSIONS

Verify dimensions against site measurements prior to fabrication by Flashman Flashing Systems Ltd.

1.10 MAINTENANCE INFORMATION

Provide one bound copy of all relevant Flashman DualBord 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, Material selection, 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, Compatibility of materials subject to run-off.

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 WIND - DESIGN BY CONTRACTOR

Design the installation to the manufacturer's requirements and as appropriate for the project wind design stated in the general section 1220 PROJECT.

2. PRODUCTS

Materials

2.1 FLASHMAN DUALBORD ALUMINIUM CLADDING

Tested to NZBC E2/VM1. Flashman DualBord profiled metal cladding, manufactured from extruded 6063 T5 aluminium alloy, negative detail in profile, 203mm x 19.25mm x 2mm thick with a 170mm cover, supplied in lengths to suit the project. Profiles are supplied with a pre-applied powder coat finish.

2.2 FLASHMAN FLASHING SYSTEM

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 Dualbord cladding system.

Components

2.3 BASE STARTER

Flashman DualBord base starter, 80mm x 8.86mm x 1.2mm thick extruded 6063 T5 aluminium alloy. Section powder coated, available in 5.8 metre lengths.

2.4 CAVITY STARTER

Flashman DualBord cavity starter, 1.3mm thick 5.8m 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 DualBord internal corner flashing, 94.2mm x 94.2mm x 1.4mm thick extruded 6063 T5 aluminium alloy. Section powder coated, available in 5.8 metre lengths.

Note: When DualBord is fixed vertically an internal locator is attached to the internal and external corners.

2.6 EXTERNAL CORNER FLASHING

Flashman DualBord external corner flashing, 89mm x 89mm x 1.4mm thick extruded 6063 T5 aluminium alloy. Section powder coated, available in 5.8 metre lengths.

Note: When DualBord is fixed vertically an internal locator is attached to the internal and external corners.

2.7 SOFFIT DADO

Flashman DualBord soffit dado, 55mm x 15mm x 1.2mm thick extruded 6063 T5 aluminium alloy. Section powder coated, available in 5.8 metre lengths.

2.8 CAP MOULD

Flashman DualBord cover mould, 50mm x 29.4mm x 1.2mm thick extruded 6063 T5 aluminium alloy. Section powder coated, available in 5.8 metre lengths.

2.9 J MOULD

Flashman DualBord J mould, 43.2mm x 20.45mm x 1.2mm thick extruded 6063 T5 aluminium alloy. Section powder coated, available in 5.8 metre lengths.

2.10 HEAD TRIM AND CLIP - HORIZONTAL PLANE

Flashman DualBord 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 5.8 metre lengths.

2.11 HEAD TRIM AND CLIP - VERTICAL PLANE

2.12 HEAD FLASHING

Flashman DualBord 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, Vermin-proofing.

2.13 JAMB FLASHING

Flashman DualBord 2-part jamb flashing, extruded 6063 T5 aluminium alloy, made in different sizes. Powder coat finish, available in 5.8m lengths.

2.14 SILL FLASHING AND SILL BEAD

Flashman Slimline Sill flashing and sill bead, extruded 6063 T5 aluminium alloy. Powder coat finish, available in 5.2m lengths.

2.15 SILL END CAPS

Flashman DualBord sill end cap, 8mm aluminium plate, engineered for a tight friction fit. Powder coated to match the sill.

2.16 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 10mm. The mitre soakers are available in left and right hand orientations.

2.17 FLASHINGS - INTER-STOREY

Folded from aluminium to the same standards as the Flashman Dualbord cladding profiles.

2.18 FLASHMAN DUALBORD FIXINGS - TIMBER FRAME

Self drilling 8 gauge or 10 gauge, galvanized steel screws for Zones B,C and D to NZS 3604. 50mm long, 8-gauge, Grade 304 stainless steel wood screws when required for Zone E to NZBC B2/AS1 (for installation over 20mm cavity).

2.19 FLASHMAN DUALBORD 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.

Accessories - supplied by approved installer

2.20 CAVITY BATTEN BARRIER STRIP

50mm wide medium density polyethylene (MDPE) tape supplied in rolls.

To comply with NZBC E2/AS1, table 23, Properties of roof underlays and wall underlays, separates aluminium components and accessories from timber battens treated with copper based treatments in NZS 3604.

2.21 FIXINGS

65mm x 2.87mm hot-dip galvanized gun nails.

Accessories - supplied by contractor

2.22 WALL UNDERLAY

Heavy weight fire retardant breather type Kraft paper laminates or wall underlay, to NZBC E2/AS1, table 23, Properties of roof underlays and wall underlays, for use as wall underlay.

2.23 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.

2.24 THERMAL BREAK - STEEL FRAME

Expanded polystyrene (EPS) to NZBC E3/AS1, 1.1.4(d).

2.25 FLEXIBLE SILL AND JAMB FLASHING TAPE

Flexible flashing tapes complying with NZBC E2/AS1, 4.3.11, Flexible flashing tape or flexible flashing tapes covered by a valid BRANZ Appraisal for use around window and door joinery openings.

2.26 WINDOW AND DOOR TRIM CAVITY AIR SEAL

Air seals complying with NZBC E2/AS1, paragraph 9.1.6, Air seals or self-expanding, moisture cure polyurethane foam air seals covered by a valid BRANZ Appraisal for use around window and door penetrations.

2.27 CAVITY BATTENS - TIMBER

Nominal 50mm wide by 25mm thick (minimum finished size of 40mm 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.

2.28 CAVITY BATTENS WITH 15 ° SLOPE - TIMBER

Nominal 50mm wide by 25mm thick horizontal cavity battens with 15 deg slope to top edge (minimum finished size of 45mm wide by 20mm thick) timber treated to H3.1.

2.29 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.

2.30 CAVITY BATTEN FIXINGS - STEEL FRAME

Self-drilling 8 gauge or 10 gauge galvanized steel screws.

2.31 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 DualBord 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 DualBord 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 DualBord 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 DualBord.

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 DualBord requirements.

3.12 INTER-STOREY JUNCTIONS

Check inter-storey drained joints for walls over two storey's 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.