If you have pre-customised this work section using the "questions and answers" provided as part of the downloading process, it may be necessary to amend some clauses to suit the final project-specific version.
The section must still be checked and customised to suit the project being specified, by removing any other irrelevant details and adding project-specific details and selections.
This section relates to the supply and installation of ecoinsulation® glasswool acoustic insulation.
It includes:
Modify or extend the above description to suit the project being specified. The full range of ecoinsulation® glasswool products are available for mid-floor applications.
ecoinsulation® glasswool insulation is manufactured by Knauf Insulation using bio-soluble glasswool with up to 80% post-consumer recycled glass, bonded with ECOSE® Technology, a binder based on rapidly renewable materials instead of petro-based chemicals, with no added formaldehyde, dyes or artificial colours. ecoinsulation® glasswool insulation has zero Ozone Depletion Potential (ODP), and zero Global Warming Potential (GWP).
Refer to 4161 UNDERLAYS, FOIL AND DPC for wall underlay and roofing underlay.
Refer to ~ for ~
Refer to relevant blown-in insulation section for areas where installing segment insulation is impractical.
Include cross references to other sections where these contain related work.
Refer to roofing sections for roofing underlays.
Refer to the general section 1232 INTERPRETATION & DEFINITIONS for abbreviations and definitions used throughout the specification
Refer to the general section 1233 REFERENCED DOCUMENTS. The following documents are specifically referred to in this section:
NZBC G6/AS1 | Airborne and impact sound |
NZBC G6/VM1 | Airborne and impact sound |
Electrical installations (Known as the Australian/New Zealand Wiring Rules) | |
Fire hazard testing - Test flames - Needle-flame test method - Apparatus, conformity test arrangement and guidance |
CodeMark™ CMNZ30095 verC - Knauf Insulation
Delete from the DOCUMENTS clause any document not cited. List any additional cited documents.
AS/NZS 3000:2007 is cited in the Electricity (Safety) Regulations 2010, which is cited by NZBC G9/VM1. AS/NZS 3000:2018 is cited in NZBC C/AS1-AS2 Appendix in relation to smoke control in air handling systems. This section uses both versions where they equally apply, and a date is suffixed where there is a difference e.g. the 2018 version covers most recent technologies. Amend the section if you want to use a particular version or a particular instance (by suffixing with the version date e.g. AS/NZS 3000:2018).
The following are related documents and if referred to in the work section need to be added to the list of DOCUMENTS.
Timber-framed buildings | |
ISO 16283.1 | Airborne sound insulation |
Insulation of lightweight-framed and solid-timber houses | |
AS/NZS 60598.2.2:2001 | Luminaires- Particular Requirements - Recessed luminaires |
AS/NZS 60598.2.2:2016 | Luminaires- Particular Requirements - Recessed luminaires |
BRANZ BU 461 | Practical sound control |
BRANZ BU 539 | Recessed downlights |
BRANZ publication | House insulation guide |
Electricity (Safety) Regulations 2010
NZS 4246 refers to AS/NZS 60695.11.5 and AS/NZS 60598.2.2 (2001 & 2016). The Electricity (Safety) Regulations 2010 only refer to AS/NZS 60598.2.2:2001.
Manufacturer and supplier documents relating to this part of the work:
ecoinsulation® glasswool Technical Data Sheets
ecoinsulation® glasswool Install Instructions
BRANZ Appraisal 1049 - ecoinsulation® Glasswool
Manufacturer/supplier contact details
Company: | Knauf Insulation Ltd |
Web: | |
Email: | info.nz@knaufinsulation.com |
Telephone: | 0800 562 834 |
It is important to ensure that all personnel on site have access to accurate, up to date technical information on the many products, materials and equipment used on a project. In most cases individual products are not used in isolation, but form part of a building process. Also a particular manufacturer and/or supplier requirements for handling, storage, preparation, installation, finishing and protection of their product can vary from what might be considered the norm. Access to technical information can help overcome this potential problem
Provide a material manufacturer/supplier warranty:
~ years | for unfaced ecoinsulation® glasswool insulation materials |
Refer to the general section 1237 WARRANTIES for additional requirements.
Refer to Manufacturer's warranty for warranty period
Modify or expand the clause to suit project or manufacturer/supplier requirements, options include:
Provide an installer/applicator warranty:
~ years | For installation of insulation |
Refer to the general section 1237 WARRANTIES for additional requirements.
Refer to Manufacturer's warranty for warranty period
Modify or expand the clause to suit project or manufacturer/supplier requirements, options include:
Refer to 1270 CONSTRUCTION for requirements relating to 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.
ecoinsulation® glasswool insulation is deemed non-combustible in accordance with AS 1530.1 and non-combustible to test criteria under the 30's Needle Flame Test to AS/NZS 60695.11.5
NOTE: When insulation abutting or covering recessed downlights is intended to be in contact with IC, CA 80, CA 135 luminaires the insulation must withstand a 30's Needle Flame test to AS/NZS 60695.11.5. ecoinsulation® glasswool insulation meets this requirement.
ecoinsulation® glasswool insulation meets the requirements of the NZBC when used in accordance with the conditions and limitations of its Certificate of Conformity CMNZ30095.
The certificate provides third parties compliance to NZBC c lauses and standards specified within the certificate, provided that installation of the system is in accordance with conditions and limitations of its Certificate of Conformity - Application Guidelines and Datasheets listed in this clause are from the CodeMark conditions and limitations.
ecoinsulation® glasswool Thermal and Acoustic Wall segments, non-combustible and certified Red List Free glasswool insulation segments to AS/NZS 4859.1, manufactured using up to 80% recycled glass with DriTherm® silicone treatment, ECOSE® Technology plant-based binder. Suitable for acoustic applications to NZBC G6/VM1 and G6/AS1. Available in a range of segment sizes, thicknesses, acoustic value, density and R-value. Refer to SELECTIONS.
Suitable for external wall, internal wall and mid-floor applications in new and existing timber framed and steel framed buildings.
ecoinsulation® glasswool Thermal Ceiling segments, non-combustible and certified Red List Free glasswool insulation segments to AS/NZS 4859.1, manufactured using up to 80% recycled glass with DriTherm® silicone treatment, ECOSE® Technology plant-based binder. Suitable for acoustic applications to NZBC G6 /VM1 and G6/AS1. Available in a range of segment sizes, thicknesses, acoustic value, density and R-value. Refer to SELECTIONS.
Suitable for mid-floor applications in new and existing timber framed and steel framed buildings.
Refer to 1270 CONSTRUCTION for requirements relating to delivery. Storage and handling of products.
Use this standard generic clause and if appropriate add additional special requirements.
Refer to 1250 TEMPORARY WORKS & SERVICES for protection requirements.
Refer to 1270 CONSTRUCTION for requirements relating to defective or damaged work, removal of protection and cleaning.
Use this standard generic clause and if appropriate add additional special requirements.
Check work previously carried out and confirm it is of the required standard for this part of the work.
Refer to the general section 1270 CONSTRUCTION for general requirements.
Amend this clause to describe specific standards and tolerances to be achieved in carrying out this part of the work. Although such tolerances are typically included in standards (NZS, AS/NZS etc) in certain circumstances it is worth restating these in this clause.
Lay, install, fit and fix insulation without gaps, tucks, folds and over compaction to NZBC H1/AS1 or AS2 and ecoinsulation® requirements and installation instructions. For all housing and buildings up to 300m², install in accordance to NZS 4246 sections 5 Walls, 6 Ceilings & Roofs, 7 Underfloor - Suspended Framed Floors and 10 Concrete Slab-on-Ground Insulation, for residential light timber or steel framed buildings. Allow insulation to re-loft/relax prior to installation. Do not cover vents. Lift up electrical wires, lighting transformers/controllers and lay the insulation underneath.
These standards give minimum building element thermal resistance (R-values). Achieving these will depend on the quality of the insulation.
CAUTION: Electrical cables and equipment partially or completely surrounded with bulk thermal insulation may overheat and fail. This applies to wiring installed prior to 1989.
Non-residential recessed light fittings to AS/NZS 3000, 4.5.2.3.5;
Refer to clause INSULATION CLEARANCES GENERALLY for clearances.
Insulation abutting or covering recessed downlights must pass the needle flame test to AS/NZS 60695.11.5, as required by AS/NZS 60598.2.2: 2001 (cited in Electricity (Safety) Regulations, Schedule 4).
Note; CA 80, CA135, IC, IC-F & NON-IC are cited in AS/NZS 60598.2.2: 2001. But CA 90, CA135, IC, IC-4 and Do-not Cover, are only in AS/NZS 60598.2.2: 2016, which makes CA 90, IC-4 & Do-not Cover, alternative solutions. However all clearances stated comply with AS/NZS 60598.2.2: 2016 and AS/NZS 3000:2018.
IC-4 due to low/zero air transfer requirements, is generally recommended for unventilated roof spaces, like skillion/compact and Passive House roofs.
Residential recessed light fittings to AS/NZS 3000, 4.5.2.3.5;
Refer to clause INSULATION CLEARANCES GENERALLY for clearances.
Insulation abutting or covering recessed downlights must pass the needle flame test to AS/NZS 60695.11.5, as required by AS/NZS 60598.2.2: 2001 (cited in Electricity (Safety) Regulations, Schedule 4 and NZS 4246).
Note; CA 80, CA135, IC & IC-F are cited in AS/NZS 60598.2.2: 2001. But CA 90, CA135, IC, & IC-4, are only in AS/NZS 60598.2.2: 2016, which makes CA 90 & IC-4 fittings alternative solutions. However all insulation clearances for all the above fittings comply with NZS 4246.
IC-4 due to low/zero air transfer requirements, is generally recommended for unventilated roof spaces, like skillion/compact and Passive House roofs.
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:
LIGHT FITTINGS
Type of fitting | Minimum insulation clearance | Comments |
Recessed, marked NON-IC, or unmarked | 100mm(increase if over 100W) | NON-IC fittings and new or old unmarked & unknown fittings, and/or insulation. Secure insulation. |
Recessed, CA 80, CA 90 or CA 135 | Abut fittings | Do NOT cover the fittings |
Recessed, IC, IC-F or IC-4 | Abut & cover fittings | Ensure insulation complies |
Recessed, marked Do-Not-Cover | Manufacturers clearances |
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Independent control gear | Place on top of insulation and 50mm from fitting | If not on top allow 50mm clearance to insulation, do not cover. Includes, transformers, ballasts & drivers etc. Maintain clearance by placing guard around control gear, refer to NZS 4246 figure 15. |
Surface fittings not exposed to insulation | Nil | Where surface fittings are isolated from insulation by appropriate linings. Excludes high heat fittings. |
Surface fittings & exposed insulation | 200mm | This is exposed insulation to any part of the exposed fitting & bulb/tube (e.g. exposed light in an unlined basement). Secure insulation. |
Note; CA 80, CA135, IC, IC-F & NON-IC are cited in AS/NZS 60598.2.2: 2001. But CA 90, CA135, IC, IC-4 and Do-not Cover, are only in AS/NZS 60598.2.2: 2016, which makes CA 90, IC-4 & Do-not Cover fittings, alternative solutions.
However for residential applications all insulation clearances for all the above fittings comply with NZS 4246.
But for Non-residential all clearances stated comply with AS/NZS 60598.2.2: 2016 and AS/NZS 3000:2018.
INBUILT RECESSED HOT APPLIANCES
Appliance | Minimum insulation clearance | Comments |
Electrical heaters | 100mm | Clearance may be able to be reduced with non-combustible insulation. Secure insulation. |
Gas appliance exposed flame | 200mm | Clearance may be able to be reduced with non-combustible insulation or with specific details from the appliance manufacturer. Excludes uncommon appliances, refer NZS 4246. |
Gas appliance flues | 75mm | Clearance may be able to be reduced with non-combustible insulation. Secure insulation. Excludes uncommon appliances refer NZS 4246. |
Oil-fired appliances and flues | 230mm | Clearance may be able to be reduced with non-combustible insulation or with specific details from the appliance manufacturer. Secure insulation. |
Open fireplace opening | 200mm | Clearance may be able to be reduced with non-combustible insulation. Secure insulation. |
Brick masonry chimneys | 50mm | Clearance may be able to be reduced with non-combustible insulation. Secure insulation. |
Metal chimneys & flues | 75mm | Clearance may be able to be reduced with non-combustible insulation or with specific details from the appliance manufacturer. Secure insulation. |
Solid fuel appliance | 600mm | Clearance may be able to be reduced with non-combustible insulation or with specific details from the appliance manufacturer. Secure insulation. |
Solid fuel appliance flue | 600mm | Clearance may be able to be reduced with non-combustible insulation or with specific details from the appliance manufacturer. Secure insulation. |
EXTRACTS, VENTS, PIPES & ROOF UNDERLAY
Application | Minimum insulation clearance | Comments |
Ducted fan motors | 50mm | Includes ducted rangehoods, extractors etc. Applies to the motor unit and electrical enclosures (not the ducts). |
Ducted fan ducts | Abut | Excludes motor unit and electrical enclosures. |
Unducted fan motors usually discharging to ceiling space | 200mm | Includes unducted, rangehoods, extractors etc, discharging into roof space.To prevent debris falling into motor. Clearance may be able to be reduced, by providing a fixed barrier around the vent. |
Passive vents (still in use) | 200mm | To prevent debris falling through. Clearance may be able to be reduced, with more cohesive insulation, like some of the rigid plastic types or providing a fixed barrier around the vent. |
Plumbing penetrations through floors | 100mm | Keep gap between pipe penetration and floor insulation in case of leaks. |
Roofing material/underlay | 25mm | From underside of roofing or flexible roofing underlay, to prevent wicking. |
Note; unducted fans (bathroom & kitchen extracts) and passive vents discharging into ceiling spaces are not recommended and are probably difficult to achieve under the NZBC, but may be encountered in existing buildings.
Amend this whole clause to suit the project requirements.
These tables in part, may repeat some information that is also in other clauses, usually it is not identical and provides further detail. It is an option to delete the repeated information from here or the other related clause if it is necessary, or leave both instances to reinforce the point.
Cut insulation using a sharp craft knife.
Install acoustic insulation to figures 1-5, NZBC G6/AS1. Alternatively, to specific design or NZBC G6/VM1. Install insulation after one side of the wall lining is fixed to the partition. Measure distance between studs and cut ecoinsulation® glasswool Thermal and Acoustic Wall segments slightly oversize to friction fit between framing members with front face of insulation flush with framing. Leave no gaps and maintain full thickness of insulation over whole installation. If cavity depth is greater than the insulation nominal thickness, fix or strap the insulation to secure. Cut insulation pieces as required to fill small spaces, behind outlet boxes, gaps around penetrations and other obstructions. Without compressing, tuck insulation behind wiring, plumbing or ductwork. Keep clean and undamaged until closed in. Close in as soon as possible after fixing.
Install acoustic insulation to figures 1-5, NZBC G6/AS1. Alternatively, to specific design or NZBC G6/VM1. Install insulation after one side of the wall lining is fixed to the partition. Measure distance between studs and cut ecoinsulation® glasswool Thermal and Acoustic Wall segments slightly oversize to friction fit with one side of the segment in the metal C-channel and other edge butted against the next metal stud. Leave no gaps and maintain full thickness of insulation over whole installation. If cavity depth is greater than the insulation nominal thickness, fix or strap the insulation to secure. Cut insulation pieces as required to fill small spaces, behind outlet boxes, gaps around penetrations and other obstructions. Without compressing, tuck insulation behind wiring, plumbing or ductwork. 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.
ecoinsulation® glasswool insulation packaging is recyclable.
Use this standard generic clause and if appropriate add additional special requirements.
For further details on selections go to www.ecoinsulation.co.nz
Substitutions are not permitted to the following, unless stated otherwise.
If substitutions are permitted modify the statement above, ensure the NO SUBSTITUTIONS clause from GENERAL is treated the same.
Select the options to suit the project and delete options not specified.
Location: | ~ |
Brand: | ecoinsulation® glasswool |
Product: | ~ |
Application: | ~ |
R-value: | ~ |
Thickness: | ~mm |
Size: | ~mm x ~mm |
Density: | ~kg/m³ |
Suitable for external wall and internal wall applications.
Note: To meet NZBC G6/AS1, acoustic insulation must be 75mm minimum thickness and 10kg/m³ minimum density. The use of insulation below 90mm thickness as a proposed alternative solution requires field testing to NZBC G6/VM1 to demonstrate compliance.
Application: | Exterior wall (thermal & acoustic) |
| Internal wall (acoustic) |
Product: | R-value: | Thickness: | Size: | Density (kg/m3): |
Thermal and Acoustic Wall segments | R1.3 | 45mm | 570mm x 11500mm | 20.5 |
| R2.2 | 90mm | 580mm x 1160mm | 10.8 |
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Thermal and Acoustic Wall SoundShield segments | R2.6 | 90mm | 430mm x 1160mm | 20.1 |
| R2.6 | 90mm | 570mm x 1160mm | 20.1 |
| R2.8 | 90mm | 430mm x 1160mm | 30.7 |
| R2.8 | 90mm | 570mm x 1160mm | 30.7 |
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Thermal and Acoustic Wall 140mm High Performance segments | R3.2 (not covered by BRANZ Appraisal) | 140mm | 570mm x 1160mm | 9.4 |
| R4.1 | 140mm | 570mm x 1160mm | 22.6 |
| R4.4 | 140mm | 570mm x 1160mm | 36 |
Location: | ~ |
Brand: | ecoinsulation® glasswool |
Product | ~ |
R-value: | ~ |
Thickness: | ~mm |
Size: | ~mm x ~mm |
Density: | ~kg/m³ |
Note: To meet NZBC G6/AS1, acoustic insulation must be 75mm minimum thickness and 10kg/m³ minimum density. The use of insulation below 90mm thickness as a proposed alternative solution requires field testing to NZBC G6/VM1 to demonstrate compliance.
Product: | R-value: | Thickness: | Size: | Density (kg/m3): |
Thermal and Acoustic Wall segments | R1.3 | 45mm | 570mm x 11500mm | 20.5 |
| R2.2 | 90mm | 580mm x 1160mm | 10.8 |
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Thermal and Acoustic Wall SoundShield segments | R2.6 | 90mm | 430mm x 1160mm | 20.1 |
| R2.6 | 90mm | 570mm x 1160mm | 20.1 |
| R2.8 | 90mm | 430mm x 1160mm | 30.7 |
| R2.8 | 90mm | 570mm x 1160mm | 30.7 |
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Thermal and Acoustic Wall 140mm High Performance segments | R3.2 (not covered by BRANZ Appraisal) | 140mm | 570mm x 1160mm | 9.4 |
| R4.1 | 140mm | 570mm x 1160mm | 22.6 |
| R4.4 | 140mm | 570mm x 1160mm | 36 |
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Thermal Ceiling segments | R3.6 | 160mm | 430mm x 1160mm | 9.2 |
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Thermal Ceiling High Performance segments | R4.2 | 180mm | 430mm x 1160mm | 10.1 |
| R7.0 | 330mm | 460mm x 1200mm | 8.0 |
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Thermal Ceiling Skillion High Performance segments | R5.0 | 165mm | 570mm x 1160mm | 29.0 |
| R6.0 | 215mm | 570mm x 1160mm | 17.5 |
| R7.4 | 265mm | 570mm x 1160mm | 18.0 |