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:

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.

Provide sound rated systems as detailed in SELECTIONS.

Site testing of each sound rated element (wall, ceiling etc), where required, will be carried out by the element system provider, to NZBC G6/VM1, using a nominated acoustic consultant.  Coordinate with element provider to rectify any element that does not meet the specified STC/IIC figure due to insulation issues.

Refer to the appropriate wall/ceiling system sections that require sound ratings.

Exposed acoustic blanket and/or bafflestacks in ceilings spaces forming air handling plenums, to have a Group Number 3 or better, but only for NZBC C/AS2, Table 4.4.

Insulation of HVAC ducts to have a Group Number to NZBC C/AS2, Table 4.4.

Refer to SELECTIONS for option.

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

Earthwool® glasswool insulation 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:

A rectangular batt to NZBC G6/AS1; 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 location, type, R-value, acoustic value, density, and thickness.

A rectangular batt to NZBC G6/AS1; 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 location, type, R-value, acoustic value, density, and thickness.

A roll of insulation to NZBC G6/AS1; 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 location, type, R-value, acoustic value, density, and thickness.

A rectangular batt to NZBC G6/AS1; 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 location, type, R-value, acoustic value, density, and thickness.

A roll of insulation to NZBC G6/AS1; 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 location, type, R-value, acoustic value, density, and thickness.

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

Refer to 4161 - WIRE NETTING, for wire netting used to support the insulation.

Refer to Section 4161 - STUD STRAPS, where plastic straps are required for cavity construction with framing greater than 450mm centres.

 Refer to 4161 - MOISTURE VAPOUR BARRIER

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

Do not use damaged or wet insulation material.

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 G6/AS1 and NZBC G6/VM1; NZBC H1/AS1: Energy efficiency, 2.0 Building thermal envelope, and to manufacturer requirements.  Install in housing to NZS 4218 and NZS 4246.  Install in large buildings to NZS 4243.1 and NZS 4220. 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 all recessed light fittings:

• 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 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, for detailed installation instructions.

Friction fit inside the steel framing 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 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.

Install, to manufacturer requirements, in ceiling voids with sufficient compression to maintain stability above the wall below.  Cut and trim to seal round ducts, piping and other services to ensure that there are no gaps or openings allowing sound to travel.  Adequate ventilation is required around electrical fittings due to heat given off.

Lay at right angles across the rafters/roof joists (under purlins).  Pull tight and fix.

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

Refer to Section 4161 - STUD STRAPS

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

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

Earthwool® glasswool insulation packaging is recyclable.