Refer to ~ for ~

Refer to 4161 UNDERLAYS, FOIL AND DPC for wall underlay and roofing underlay.

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

The following abbreviations apply specifically to this section:

Refer to the general section 1233 REFERENCED DOCUMENTS.  The following documents are specifically referred to in this section:

Manufacturer and supplier documents relating to this part of the work:

BRANZ Appraisal 648 - Earthwool® glasswool Insulation

BRANZ Appraisal 975 - Earthwool® glasswool insulation: quilted underfloor batt.

Manufacturer/supplier contact details

Provide a warranty for:

• Provide this warranty on the manufacturer/supplier standard form (if not available then use the standard form in the general section 1237WA WARRANTY AGREEMENT)
• Commence the warranty from the date of practical completion of the contract works.

Refer to the general section 1237 WARRANTIES for additional requirements.

Provide an installer/applicator warranty:

• Provide this warranty on the installer/applicator standard form (if not available then use the standard form in the general section 1237WA WARRANTY AGREEMENT).
• Commence the warranty from the date of practical completion of the contract works.

Refer to the general section 1237 WARRANTIES for additional requirements.

Refer to 1270 CONSTRUCTION for requirements relating to experience, skill, and qualifications.

Substitutions are not permitted to any of the specified systems, components and associated products listed in this section.

Refer to SELECTIONS for location, type, R-Value, and thickness.

Provide sound rated systems as detailed in SELECTIONS.

Earthwool® glasswool insulation is non-combustible to test criteria under the 30's Needle Flame Test to AS/NZS 60695.11.5.

Earthwool® glasswool meets the requirements of the NZBC when used in accordance with the conditions and limitations of its Certificate of Conformity. Refer to MANUFACTURER/SUPPLIER DOCUMENTS for CodeMark certificate.

The following Earthwool® glasswool Product Datasheets and Installation Instructions are listed in the CodeMark conditions and limitations:

Quilted Underfloor is a rectangular batt to NZBC H1/AS1, AS/NZS 4859.1:2002.  Made using recycled glass and with ECOSE® Technology, the underfloor batt is completely wrapped in a breathable plastic film, providing a wind-wash barrier.

Refer to SELECTIONS for options.

Faced Underfloor is an insulation roll to NZBC H1/AS1, AS/NZS 4859.1:2002.  Made using recycled glass, and with ECOSE® Technology, the insulation roll is faced with a black glass wind-wash barrier.

Refer to SELECTIONS for options.

A rectangular batt to NZBC H1/AS1, AS/NZS 4859.1:2002.  Made using recycled glass and with ECOSE® Technology, it is suitable for thermal applications.

Refer to SELECTIONS for options.

A rectangular batt to NZBC H1/AS1, AS/NZS 4859.1:2002.  Made using recycled glass and with ECOSE® Technology, it is suitable for acoustic applications.

Refer to SELECTIONS for options.

A rectangular batt, or roll, to NZBC H1/AS1, AS/NZS 4859.1:2002. Made using recycled glass and with ECOSE® Technology.

Refer to SELECTIONS for options.

A rectangular batt to NZBC H1/AS1, AS/NZS 4859.1:2002.  Made using recycled glass and with ECOSE® Technology, it is suitable for thermal and acoustic applications.

Refer to SELECTIONS for options.

An insulation roll to NZBC H1/AS1, AS/NZS 4859.1:2002.  Made using recycled glass and with ECOSE® Technology, it is suitable for thermal and acoustic applications.

Refer to SELECTIONS for options.

A rectangular batt to NZBC H1/AS1, AS/NZS 4859.1:2002.  Made using recycled glass and with ECOSE® Technology, it is suitable for thermal and acoustic applications.

Refer to SELECTIONS for options.

Polypropylene or similar strapping stapled across framing to retain insulation in wall and ceiling applications.

Refer to 4161 UNDERLAYS, FOIL AND DPC for wire netting used to support the insulation.

Refer to 4161 UNDERLAYS, FOIL AND DPC for reflective foil.

Refer to 4161 UNDERLAYS, FOIL AND DPC for vapour barrier.

Refer to 1270 CONSTRUCTION for requirements relating to delivery. Storage and handling of products.

Do not use damaged or wet insulation material.

     To Health and Safety at Work Act 2015 and take all safety precautions necessary to reduce potential hazards and risks.  Refer also to NZS 4246, Appendix B. - Health and Safety.

The building envelope must be maintained to a weathertight condition to ensure the insulation remains dry.  Cavities must be clean and dry before fitting insulation.

Check work previously carried out and confirm it is of the required standard for this part of the work.

Lay, install, fit and fix to NZBC H1/AS1: Energy efficiency, 2.0 Building thermal envelope, and to manufacturer requirements.  Install in housing to NZS 4218 and NZS 4246.  Do not cover vents.  Allow a clear gap around metal flues as recommended by the fireplace manufacturer.  Refer to manufacturer installation instructions and NZS 4246 for further details.

Residential applications - The clearance between Earthwool glasswool insulation and recessed downlights:

• Ensure new recessed downlights are one of the new classes classified in AS/NZS 60598.2.2; CA 80, CA 135, IC and IC - F
• Classification type CA 80, CA 135, to AS/NZS 60598.2.2; insulation can abut the sides.
• Classification type IC and IC - F, to AS/NZS 60598.2.2 insulation can abut and cover over the top of the downlight.
• Classification type NON IC to AS/NZS 60598.2.2 insulation cannot abut or cover the downlight. This class of downlights is banned from residential applications.
• Provide larger clearances where required by the light manufacturer.
• In a retrofit situation where recessed downlights are unclassified or unknown, ensure 100mm clearance between insulation and downlights to AS/NZS 3000, figure 4.9.

Non-Residential applications - The clearance between Earthwool glasswool insulation and all recessed light fittings:

• 100mm gap to NZBC C/AS2 and AS/NZS 3000, figure 4.9
• Provide larger clearances where required by the light manufacturer.
• In a retrofit situation where recessed downlights are unclassified or unknown, ensure 100mm clearance from the insulation to AS/NZS 3000, figure 4.9.

Insulation may need to have a gap to some mechanical and electrical services and equipment, including ducts and chimneys.  The gaps should be to the NZS 4246 based tables below or to the equipment manufacturer requirements if they require larger gaps.  Smaller gaps to manufacturer requirements can be used for equipment specifically manufactured with heat shielding or similar (excludes light fittings).  Installed gap not to be more than 50mm bigger than the required gap.

The following tables are subject to:

• The requirements of NZS 4246.
• The insulation is exposed to the source of heat or equipment etc.
• Insulation, has passed the needle flame test to AS/NZS 60695.11.5 and/or is non-combustible.
• Gaps to hot surfaces may have to be increased with non-compliant insulation and plastic/polymeric type insulation (EPS, XPS, PIR, etc), check with insulation manufacturer.
• Gaps to hot surfaces may be able to be reduced with non-combustible insulation, check with equipment manufacturer.
• "Secure insulation" if required means, glue, mechanical fix, or provide fixed barriers at gap edge of insulation to hold in place.  Rigid or semi rigid insulation may only need a firm friction fit (secure loose pieces).

INSULATION CLEARANCES FROM RECESSED LIGHT FITTINGS

FOR MINIMUM INSULATION CLEARANCES TO INBUILT RECESSED HOT APPLIANCES - REFER TO NZS 4246

INSULATION CLEARANCES FROM EXTRACTS, VENTS, PIPES & ROOF UNDERLAY

Friction fit insulation batt between floor joists and butt joins tightly to ensure there are no gaps.  Staple into the joists at 200mm intervals on both sides of the joist. For pole houses increase the staples to 100mm centres and tape the joins as required.

Ensure the heavier duty grey film is stapled 65mm below the floor, facing down, and that it is pulled tight to provide smooth consistent surface.  Follow the manufacturer installation instructions and refer to NZS 4246 for further guidance on the installation of underfloor insulation.

Staple insulation between floor joists and butt joins tightly to ensure there are no gaps.  Staple into the joists at 200mm intervals on both sides.  Ensure the facing is 75mm below the floor, facing down, and that it is pulled tight so that there are no bulges in accordance with the installation instructions.  Refer to NZS 4246 for installation guidelines and Earthwool® glasswool insulation underfloor Installation Instructions.

Friction fit wall batt between framing members and linings.  Cut on site to fill cavity and provide a close even fit.  When cutting to fill a void, oversize by up to 10mm to ensure a tight fit.  Ensure there is a friction fit on all faces of the insulation.  If cavity depth is greater than the insulation nominal thickness, fix or strap the product to secure in accordance with installation instructions.  Cut into smaller pieces for smaller spaces and around penetrations to achieve efficient thermal performance.  Do not fold, tuck or compress the insulation.  Refer to NZS 4246 for installation guidelines and Earthwool® glasswool insulation Product Data sheets listed in the CodeMark, for detailed installation instructions.

Friction fit wall batt inside the steel studs and cut on site to fit nog spacing.  Fill cavity and provide a close even fit.  When cutting to fill a void, oversize by up to 10mm to ensure a tight fit.  Do not fold, tuck or compress the insulation.  Cut to smaller pieces for smaller spaces and around penetrations to achieve efficient thermal performance.

Friction fit insulation between framing members and linings.  Cut on site to fill cavity and provide a close even fit.  When cutting to fill a void, oversize by up to 10mm to ensure a tight fit.  Ensure there is a friction fit on all faces of the insulation.  If cavity depth is greater than the insulation nominal thickness, fix or strap the product to ensure the insulation is installed hard against the flooring or the ceiling lining.  Cut into smaller pieces for smaller spaces and around penetrations to achieve efficient thermal performance.  Refer to NZS 4246 for installation guidelines.

Friction fit insulation between framing members.  Cut across the roll to fit nogs and small spaces around penetrations.  Leave no gaps and maintain full thickness of insulation over the whole of the installation.  Leave gap around metal flues to the manufacturer requirements.

Loose lay over ceiling framing and between truss chords.  Fit securely around all penetrations, leave clearances where required.  Cut ceiling roll as required.

Friction fit first layer of ceiling insulation roll parallel to and between ceiling framing members.  Run a second layer of insulation roll at 90° to and over the first layer over framing members. Use a sharp craft knife to cut to required size to fit nogs and small spaces around penetrations.  Leave no gaps and maintain full thickness of the insulation over the whole of the installation.  Leave gap around metal flues to the manufacturer requirements.

Where perimeter of ceiling space is too low to allow full depth of insulation plus the 25mm air gap to the underlay, provide reduced perimeter insulation to NZS 4246.6.2 and maintain the 25mm gap.

Friction fit insulation between joists/rafters.  Use a sharp craft knife to cut to required size or around penetrations if required.  Maintain a minimum clearance of 25mm between the insulation and the roofing underlay, to NZS 4246 clause 6.2.10, except where a solid timber (or plywood) substrate is used under the roof cladding.

Friction fit insulation between joists/rafters.  Use a sharp craft knife to cut to required size or around penetrations if required.  Maintain a minimum clearance of 20mm between the underside of the substrate (plywood etc) and any insulation to NZBC E2/AS1 clause 8.5.2

Friction fit batt, or roll, in place to completely fill the whole of the cavities, after the wall lining is fixed to one side of the partition.  Slightly oversize to retain friction fit.  Keep clean and undamaged until closed in.  Close in as soon as possible after fixing.

Refer to 1270 CONSTRUCTION for completion requirements and if required commissioning requirements.

Earthwool® glasswool insulation packaging is recyclable.