4721JS
JET STREAM® MAX ACOUSTIC INSULATION
1
GENERAL

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 modify 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 Jet Stream® MAX blow-in glasswool Insulation, acoustic and thermal insulation systems including installation.

It includes:

Modify or extend the above description to suit the project being specified.

 

 NOTE - Retrofitting exterior walls or internal firewalls, insulation requires a Building Consent to the Building Act 2004, Schedule 1, Clause 13.

1.1
RELATED WORK

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

Refer to 4711K EARTHWOOL GLASSWOOL INSULATION for infill insulation around recessed light fittings.

Refer to 4711EC ECO INSULATION® GLASSWOOL INSULATION for infill insulation around recessed light fittings.

Refer to 4711JY JET SPRAY FLOOR SPRAY-ON GLASSWOOL INSULATION for mid-floors and crawl spaces where Jet Stream® MAX is not feasible.

Include cross references to other sections where these contain related work.

Refer to roofing sections for roofing underlays.

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:

BIB

Blow In Blanket

Documents
1.3
DOCUMENTS

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

NZBC C/AS1-AS2

Protection from Fire

NZBC G6/AS1

Airbourne and Impact Sound

NZBC G6/VM1

Airbourne and Impact Sound

NZBC H1/AS1

Energy efficiency

AS/NZS 3000

Electrical installations

AS/NZS 4859.1:2002

Materials for the thermal insulation of buildings - General criteria and technical provisions

AS/NZS 5110

Recessed Luminaire Barriers

AS/NZS 60598.2.2:2001

Luminaires- Particular Requirements - Recessed luminaires

AS/NZS 60695.11.5

Fire hazard testing - Test flames - Needle-flame test method - Apparatus, conformity test arrangement and guidance

NZS 4218

Thermal insulation - Housing and small buildings

NZS 4243.1

Energy efficiency - Large buildings - Building thermal envelope

NZS 4246

Energy efficiency - Installing bulk thermal insulation in residential buildings

Delete from the DOCUMENTS clause any document not cited.  List any additional cited documents.

NOTE: AS/NZS 4859.1:2002 is cited in the NZBC H1/AS1. New version AS/NZS 4859.1&.2:2018 not yet cited.

NOTE: AS/NZS 4859.1:2002 superseded by AS/NZS 4859.1:2018 Part 1 and AS/NZS 4859.2:2018 Part 2

 

The following are related documents and if referred to in the work section need to be added to the list of DOCUMENTS.

NZBC H1/VM1

Energy efficiency

NZS 3604

Timber-framed buildings

NZS 4214

Methods of determining the total thermal resistance of parts of buildings

NZS 4220

Code of practice for energy conservation in non-residential buildings

AS/NZS 4859.1:2018

Thermal insulation materials for buildings - Part 1: General criteria and technical provisions

AS/NZS 4859.2:2018

Thermal insulation materials for buildings - Part 2: Design

ISO 16283.1

Airborne sound insulation

SNZ/PAS 4244

Insulation of lightweight-framed and solid-timber houses

BRANZ BU 461

Practical sound control

BRANZ BU 539

Recessed downlights

BRANZ publication

House insulation guide

1.4
MANUFACTURER/SUPPLIER DOCUMENTS

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

CodeMark Certificate:

Jet Stream® MAX and Supafil Cavity Insulation GM-CM-30067-RevB

 

 

Refer to Compliance - CODEMARK CERTIFICATES, for details regarding conditions and limitations - Product Datasheets and Application Guidelines.

 

Jet Stream® MAX Application Guidelines are only available to approved installers.

 

Manufacturer/supplier contact details

Company:

Knauf Insulation New Zealand

Web:

www.knaufinsulation.co.nz

Email (Technical):

tech.nz@knaufinsulation.com

Email (Sales):

sales.nz@knaufinsulation.com

Telephone:

0800 KNAUFI (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.

Warranties
1.5
WARRANTY - MANUFACTURER/SUPPLIER

Provide a material manufacturer/supplier warranty:

50 years: For Jet Stream® MAX glasswool materials

 

  • 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.

Modify or expand the clause to suit project or manufacturer/supplier requirements, options include:

  • Change the standard form to be used (check with the manufacturer/supplier, use the general section 1237WA WARRANTY AGREEMENT  if required)
  • Commence the warranty from the date of purchase (check with the manufacturer/supplier)
1.6
WARRANTY - INSTALLER/APPLICATOR

Provide an installer/applicator warranty:

1 -year

For installation of insulation

 

  • 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.

~ years to ~ years are the sort of warranty periods that can be expected depending on material selection and project conditions.  Check with the manufacturer/supplier for their specific periods.

 

Modify or expand the clause to suit project or manufacturer/supplier requirements, options include:

  • Modify the form to be used
  • Commence the warranty from the date of purchase (check with the manufacturer/supplier)
Requirements
1.7
QUALIFICATIONS - GENERALLY

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

1.8
NO SUBSTITUTIONS

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

Performance - Acoustic Insulation
1.9
ACOUSTIC PROPERTIES

Jet Stream® MAX installed density range (25-28kg/m³) exceeds minimum density requirement in NZBC G6/AS1.

Use site performance testing only where this is specifically required.

1.10
SOUND RATING REQUIREMENTS

Provide sound rated systems as detailed in SELECTIONS.

1.11
SOUND CONTROL SITE TEST

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.

 Delete or modify the clause if, the project is not designed to NZBC C/AS2 or there is no insulation of air handling plenums or ducts involved.

 Note, insulation (excludes foamed plastics) in plenums for NZBC C/AS1 and AS2, does not require a group number.  Duct Group Numbers do vary with different situations.  Consult with the project Fire Consultant and/or the Services Engineer if necessary.

Performance - Fire properties
1.12
FIRE PROPERTIES

Refer to clauses RECESSED LIGHT FITTINGS - GENERAL, and INSULATION CLEARANCES - GENERAL

Refer to RELATED WORK clause for insulating over recessed light fittings.

NOTE: Loose-fill insulation has specific requirements under AS/NZS 3000, a 100mm gap must be maintained between loose-fill insulation and recessed light fittings, therefore, no requirement to withstand a 30s Needle Flame test to AS/NZS 60695.11.5

Compliance

NZS 4218 and NZS 4243.1 provide a schedule, a calculation and a modelling method for determining insulation to meet  NZBC H1. - Schedule Method, Calculation Method, and Building Performance Method (BPI).

Ensure SELECTIONS reflect the project requirements.

1.13
CODEMARK CERTIFICATE

Jet Stream® MAX 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 Jet Stream MAX® Product Datasheets and Installation Instructions are listed in the CodeMark conditions and limitations:

Installation datasheet

Jet Stream Max - Blow-in Glasswool Insulation Datasheet. December 2015, Ref: KIAN0814093DS

The certificate provides third parties compliance to NZBC Clauses and standards specified within the certificate, provided that installation of the system is in accordance with conditions and limitations of its Certificate of Conformity.

2
PRODUCTS
Materials - acoustic insulation

Modify to suit location of insulation.  Check condition of substrates particularly for installations in existing wall cavities.  It will fill gaps and voids around services penetrations such as water pipes and electrical wiring., as well as tight cormers and hard to reach areas.

Jet Stream® MAX is an unbonded, blow-in, glasswool insulation for walls, roofs, floors, and skillion roofs.  It is designed for installation in existing cavities that require, non-combustible, high performance insulation. Note that insulation should be replaced if wet.

Jet Stream® MAX has a high percentage of post-consumer recycled glass content, is rated at zero Ozone Depletion Potential (ODP) and zero Global Warming Potential (GWP).  It requires no mixing on site, and should only be installed by Approved Installers.

AS/NZS 4859.1:2002 superseded by AS/NZS 4859.1:2018 Part 1 and AS/NZS 4859.2:2018 Part 2

2.1
JET STREAM® MAX GLASSWOOL: WALLS

Jet Stream® MAX loose, unbonded glasswool blow-in insulation for walls to NZBC G6; NZBC H1/AS1; AS/NZS 4859.1:2002. With a thermal conductivity of 0.032W/mK, when installed at a design density of 28kg/m³, the insulation will achieve R-values at various thicknesses to meet requirements of NZS 4218, NZS 4243.1.

Refer to SELECTIONS for options.

modify to suit project requirements

2.2
JET STREAM® MAX GLASSWOOL: MID FLOORS

Jet Stream® MAX loose, unbonded glasswool blow-in insulation for floors to NZBC G6; NZBC H1/AS1; AS/NZS 4859.1:2002. With a thermal conductivity of 0.038W/mK - 0.032W/mK, when installed at a design density of 25kg/m³ - 28kg/m³ respectively, the insulation will achieve R-values at various thicknesses to meet requirements of NZS 4218, NZS 4243.1

Refer to SELECTIONS for options.

modify to suit project requirements

2.3
JET STREAM® MAX GLASSWOOL: CEILINGS

Jet Stream® MAX loose, unbonded glasswool blow-in insulation for ceilings to NZBC G6; NZBC H1/AS1; AS/NZS 4859.1:2002. With a thermal conductivity of 0.038W/mK - 0.032W/mK, when installed at a design density of 25kg/m³ - 28kg/m³ respectively, the insulation will achieve R-values at various thicknesses to meet requirements of NZS 4218, NZS 4243.1

Refer to SELECTIONS for options.

modify to suit project requirements

2.4
JET STREAM® MAX GLASSWOOL: SKILLION ROOFS

Jet Stream® MAX loose, unbonded glasswool blow-in insulation for roofs to NZBC G6; NZBC H1/AS1; AS/NZS 4859.1:2002. With a thermal conductivity of 0.038W/mK - 0.032W/mK, when installed at a design density of 25kg/m³ - 28kg/m³ respectively, the insulation will achieve R-values at various thicknesses to meet requirements of NZS 4218, NZS 4243.1

Refer to SELECTIONS for options.

modify to suit project requirements

2.5
JET STREAM® MAX GLASSWOOL: MEMBRANE ROOFS AND DECKS

Jet Stream® MAX loose, unbonded glasswool blow-in insulation for roofs to NZBC G6; NZBC H1/AS1; AS/NZS 4859.1:2002. With a thermal conductivity of 0.038W/mK - 0.032W/mK, when installed at a design density of 25kg/m³ - 28kg/m³ respectively, the insulation will achieve R-values at various thicknesses to meet requirements of NZS 4218, NZS 4243.1

Refer to SELECTIONS for options.

modify to suit location of insulation.

Components
2.6
BLOW IN BLANKET (BIB)

Blow in Blanket (BIB) is a special mesh fabric used in the installation of Jet Stream® MAX, for walls, floors and skillion roofs.  It performs as a substrate for floors or skilion roofs, and as a retainer for wall cavities.

Accessories - General
2.7
WIRE NETTING

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

Wire netting is used to support roofing underlays, particularly those that are not self supporting. Wire netting must be used to support all types of underlay where the roof has a pitch below 8°.

2.8
REFLECTIVE FOIL

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

2.9
VAPOUR BARRIER

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

Accessories
2.10
GUARDS / BARRIERS

Rigid substrate guards / barriers that shield certain areas whilst installing Jet Stream® MAX and/or prevent loose-fill insulation contacting recessed luminaires or auxiliary electrical equipment once installed.

Barriers to recessed luminaires (downlights) shall comply with AS/NZS 5110, and AS/NZS 3000, 4.5.2.3.3.e); 4.5.2.3.4c), and figure 4.9

2.11
DENSITY CHECK-KITS

Jet Stream® MAX density check kits including Pin and Plate, Density Control Kit, Flow Rate bag and spring weighted balance.

Equipment
2.12
BLOWING MACHINE

Pneumatic blowing machine & associated hoses, coupling and clips in accordance with Eco Insulation Systems Ltd installation guidelines.

3
EXECUTION
Conditions
3.1
DELIVERY, STORAGE & HANDLING OF PRODUCTS

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.

Do not use damaged or wet insulation material.

3.2
ROUTINE MATTERS

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.

3.3
PRE-INSTALLATION REQUIREMENTS

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

Moisture content:

~% maximum for framing

Location and framing

are free from moisture, that the cavities are not interconnected

Discard

Damaged or wet insulation

Underlays and substrates

- External walls have a Rigid Air Barrier if external cladding is installed over a cavity, or a flexible building wrap if cladding is direct fixed to framing.- Internal walls to have at rigid internal lining to one side.

- Mid-floor applications must be constructed with a rigid substrate.

- Underfloor applications, a rigid lining to be installed after installation, over the Blow-in Blanket.

- Skillion roof applications must be constructed with a rigid substrate at the top of the cavity.

Vapour Barriers

Ensure vapour barrier forms one homogeneous sheet

Retrofit walls

Ensure each framed cavity is closed and structurally sound.  Building paper or sarking must be present, ensure in good condition.

Ceiling survey

- Ensure suitability and load bearing capacity of the ceiling.Inform Contract Administrator of any concerns.

Install guards to Underfloors / Mid-floors / Ceilings

Install rigid substrate guards to all plumbing penetrations and pipes to floor and to recessed lighting and auxiliary electrical equipment. Protect eaves and shield ventilation paths as required, protect areas around water tanks, flues, access hatches as per requirements in Jet Stream® MAX: Ceiling Application Guidelines and NZS 4246.  Install segment of alternative insulation of the same R-value to ceiling access hatch. Install rigid substrate guards to all recessed lighting and auxiliary electrical equipment in accordance with NZS 4246 and NZBC C/AS1-AS2, unless specifically stated otherwise by luminaire's manufacturer.  Ensure all in accordance with the Jet Stream® MAX: Application Guidelines.  For residential applications install segment of alternative insulation of the same R-value to recessed light fittings in accordance with NZS 4246.

Refer to RELATED WORK clause for insulation abutting or covering recessed luminaires. For residential applications, infill insulation, to the same R-Value, can be Earthwool® glasswool insulation as it meets the needle flame test to AS/NZS 60695.11.5 and is non-combustible.  For recessed light fittings: CA80, CA90 & CA135 insulation to abut fitting,  IC, IC-F & IC-4  insulation to abut and cover fitting.  For non-residential applications and for unmarked recessed light fittings no infill insulation to be installed and clearances to be maintained.

Install Blow In Blanket (BIB)

- Exterior walls: either glued or stapled to the internal side of external wall framing. External side of wall to have rigid substrate lining.

- Under floors/Midfloor: either glued or stapled to the framing, lining the underside of floor joists.  If using open web joists, apply a strip of BIB to the inside face of web to create a closed cavity.

- Skillion Roof: either glued or stapled to the framing, lining the underside of roof framing.

Modify table to suit application.

Thermal insulation requirements are defined by climate zone and calculation methods set out in NZS 4218.  Refer also to NZBC H1/VM1.  Climate zone tables are also appended to NZS 4246.

Installation
3.4
INSTALLATION - GENERAL

Lay, install, fit and fix to NZBC G6; 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.

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.

3.5
EQUIPMENT SETUP & TESTING

Machine settings to be in line with the Jet Stream® MAX: Application Guidelines.  Carry out an initial density check in accordance with manufacturer recommendations.  Carry out periodic density checks throughout installation at a minimum of one per hour.  Refer to SELECTIONS for required densities.

3.6
RECESSED LIGHT FITTING CLEARANCES - RESIDENTIAL

Residential applications - The clearance between Jet Stream MAX 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.
  • For Jet Stream® MAX (loose fill), maintain 100mm gap and provide a barrier complying with AS/NZS 5110 around recessed light fittings in accordance with AS/NZS 3000, figure 4.9 and clause 4.5.2.3.3e, unless specifically stated otherwise by the luminaire's manufacturer.
  • 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.

This section uses AS/NZS 60598.2.2:2001 which is cited in NZBC C/AS1 and C/AS2. As AS/NZS 60598.2.2:2016 is not cited at time of writing, it is not used in this section. If you use AS/NZS 60598.2.2:2016 as an alternative solution modify this section accordingly.

AS/NZS 60598.2.2:2001 and NZS 4246 both state that loose-fill insulation shall not abut or cover recessed luminaires (downlights) unless specifically allowed by the luminaire manufacturer.  Refer to RELATED WORK clause for insulation abutting or covering recessed luminaires.  Insulation covering recessed light fittings (downlights) must pass the needle flame test to AS/NZS 60695.11.5.

3.7
RECESSED LIGHT FITTING CLEARANCES - NON-RESIDENTIAL

Non-Residential applications - The clearance between Jet Stream MAX 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.

AS/NZS 3000 is referenced in AS/NZS 60598.2.2:2001, which is referenced in NZBC C/AS1-C/AS2.

AS/NZS 60598.2.2:2001 and NZS 4246 both state that loose-fill insulation shall not abut or cover recessed luminaires (downlights) unless specifically allowed by the luminaire manufacturer.

3.8
INSULATION CLEARANCES FROM HEAT SOURCES - GENERAL

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).
  • Jet Stream® MAX (loose fill) will require fixed barriers to NZS 4246 and maintain gaps as required.

 

INSULATION CLEARANCES FROM RECESSED LIGHT FITTINGS

Type of fitting

Minimum insulation clearance

Comments

Unmarked recessed

100mm

New or old unmarked & unknown fittings and/or insulation. Secure insulation.For loose fill insulation, refer to NZS 4246 figure 8.

CA 80, CA 90 or CA 135 recessed

Abut in residential.100mm in others and for loose fill insulation.

Do NOT cover the fittings.For residential loose fill insulation, refer to NZS 4246 figure 4.For Loose fill insulation, maintain 100mm clearance unless specifically stated otherwise by luminaire's manufacturer.

IC, IC-F or IC-4 recessed

Abut in residential.100mm in others and for loose fill insulation.

Cover in residential only except for residential loose fill insulation, refer to NZS 4246 figure 7.For Loose fill insulation, maintain 100mm clearance unless specifically stated otherwise by luminaire's manufacturer.Do NOT cover in others

Independent control gear

Place on top of insulation except loose fill insulation & 50mm from fitting

If not on top allow 50mm clearance to insulation, do not cover. Includes, transformers, ballasts & drivers etc.For loose fill insulation, do not place control gear on insulation. 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.For loose fill insulation ensure guard maintains clearance.

Note; CA 80, CA135, IC & IC-F are cited in NZBC C/AS's and AS/NZS 60598.2.2: 2001.  But CA 90, CA135, IC & IC-4 only are in AS/NZS 60598.2.2: 2016, which makes CA 90 & IC-4 alternative solutions.  However all clearances stated comply with AS/NZS 60598.2.2: 2016 for residential.

 

FOR MINIMUM INSULATION CLEARANCES TO INBUILT RECESSED HOT APPLIANCES refer to NZS 4246

 

INSULATION CLEARANCES FROM 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).  For loose fill insulation ensure guard maintains clearance.

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.For loose fill insulation ensure guard maintains clearance.

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.For loose fill insulation ensure guard maintains clearance.

Plumbing penetrations through floors

100mm

Keep gap between pipe penetration and floor insulation in case of leaks.  For loose fill insulation ensure guard maintains clearance.

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.

Modify 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.

Installation - interior and exterior walls
3.9
PRE-INSTALLATION - RETROFITTING WALLS

Ensure each framed cavity is closed and structurally sound.  External side of wall to have rigid substrate lining if installed over a cavity, or a wall underlay underneath the external cladding.  Drill installation holes into the internal linings to a specified grid pattern to maximise insulation coverage.

3.10
PRE-INSTALLATION - NEW WALLS

Ensure each framed cavity is closed and structurally sound.  External side of wall must have rigid substrate lining if installed over a cavity, or a wall underlay underneath the external cladding.  For internal walls, one side of the wall must have a rigid lining to support the BIB.

3.11
INSTALL BLOW IN BLANKET (BIB)

Either glue or staple the BIB to the internal side of external wall framing.

BIB may be required for retrofitting walls where significant areas of internal wall linings are removed.

3.12
INSTALL TO WALLS

Install Jet Stream® MAX using pneumatic blowing machine in accordance with the Jet Stream® MAX: Application Guidelines.  Refer to CODEMARK CERTIFICATE for datasheets and guidelines.

Refer to SELECTIONS for options.

3.13
COMPLETELY FILL CAVITIES

Wherever practicable, all cavities should be completely filled.

3.14
LININGS

Ensure a rigid external lining is installed as soon as practically after installation of insulation.  Ceiling battens to be installed after Blow in Blanket (BIB) however ensure any clips and hangers have been installed prior to BIB installation.

3.15
FILL INSTALLATION HOLES - RETROFITTING INSULATION

Installation holes must be filled using a filler compatible with the wall linings and their finishes.

Installation - mid-floors
3.16
INSTALL BLOW IN BLANKET (BIB)

either glued or stapled to the framing, lining the underside of floor joists.  If using open web joists, apply a strip of BIB to the inside face of web to create a closed cavity.

3.17
INSTALL TO MID-FLOORS

Install Jet Stream® MAX using pneumatic blowing machine in accordance with the Jet Stream® MAX: Application Guidelines and datasheets.  Refer to CODEMARK CERTIFICATE for relevant information listed in the CodeMark Conditions and Limitations.

3.18
COMPLETELY FILL CAVITIES

Wherever practicable, all cavities should be completely filled.

3.19
LININGS TO MID-FLOOR

Ensure a rigid external lining is installed as soon as practically after installation of insulation.  Ceiling battens to be installed after Blow in Blanket (BIB) however ensure any clips and hangers have been installed prior to BIB installation.

Installation - ceilings, skillion roofs, and Membrane roof and decks
3.20
PRE-INSTALLATION - SURVEY FOR RETROFITTING

Ensure suitability and load bearing capacity of the ceiling.  Inform Contract Administrator of any concerns.  Drill holes in ceiling lining to specified grid pattern to Application Guidelines.

3.21
PRE-INSTALLATION - SURVEY FOR NEW CEILINGS/SKILLION ROOFS/MEMBRANE ROOFS

Ceiling lining must be installed prior to installation: Ensure suitability and load bearing capacity of ceiling.  Inform Contract Administrator of any concerns.

3.22
INSTALL BLOW IN BLANKET (BIB)

Either glued or stapled to the framing, lining the underside of roof framing.

A rigid substrate must be present at the top of the cavity.

3.23
INSTALL BETWEEN RAFTERS (SKILLION ROOF) - INSULATION CLEARANCES

Install Jet Stream® MAX using pneumatic blowing machine in accordance with the Jet Stream® MAX: Ceiling Application Guidelines.

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.

Refer to CODEMARK CERTIFICATE for datasheets and guidelines.

Refer to SELECTIONS for options:

 This is to prevent wicking.  Should the 25mm insulation gap need to be reduced, it will be specific design.

 Note that some roofs may require a ventilation gap under a solid timber substrate.

 Modify clause to suit project requirements.

3.24
INSTALL BELOW MEMBRANE ROOFS AND DECKS - INSULATION CLEARANCES

Install Jet Stream® MAX using pneumatic blowing machine in accordance with the Jet Stream® MAX: Ceiling Application Guidelines.  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

Refer to CODEMARK CERTIFICATE for datasheets and guidelines.

Refer to SELECTIONS for options:

 Should the 20mm insulation gap need to be reduced, it will no longer be an Acceptable Solution but an Alternative Solution.

 Modify clause to suit project requirements.

3.25
COMPLETELY FILL CAVITIES

Wherever practicable, all cavities should be completely filled.

3.26
LOW PITCH & HARD TO FILL CEILINGS

In some cases, ceiling access may limit ability to install insulation in accordance with manufacturer guidelines.  Generally, it is likely it will be installed at a greater density than required in these locations, which will increase R-value.  If required, contact Knauf insulation for further advice.

Options for installing into hard to fill ceiling areas - use BIB as a substrate where necessary or install through installation holes.

Ensure a 25mm air gap is maintained between insulation and underside of roofing underlay, or sarking.

Completion & Commissioning
3.27
COMPLETION MATTERS

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

Jet Stream® Max packaging is recyclable.

Use this standard generic clause and if appropriate add additional special requirements.

4
SELECTIONS

For further details on selections go to products www.knaufinsulation.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.

Wall insulation
4.1
JET STREAM® MAX: WALLS

Location:

~

Brand:

Jet Stream® MAX

Design Density:

~ kg/m³

R-value:

R ~

Thickness:

~ mm

Accessories:

~

Options:

R-value: (at 28 kg/m³)

Thickness - for new buildings

R2.3

75 mm

R2.8

90 mm

R3.1

100 mm

R4.3

140 mm

R5.9

190 mm

R7.5

240 mm

R9.1

290 mm

 

 

R-value (at 25 kg/m³):

Thickness - for retrofitting buildings

R2.3

90 mm

R2.6

100 mm

R3.6

140 mm

R5.0

190 mm

R6.3

240 mm

 

 

Accessories:

Rigid substrate guards to plumbing penetrations and pipework to sub-floor, to protect recessed luminaires, auxiliary electrical items and other fixtures to floors as required.

Blow-In-Blanket (BIB)

Recessed Luminaires

Infill insulation: Earthwool® glasswool insulation ceiling segment to equivalent R-value for recessed luminaires.

Mid-floor insulation
4.2
JET STREAM® MAX: MID FLOORS

Location:

~

Brand:

Jet Stream® MAX

Design Density:

~ kg/m³

R-value:

R ~

Thickness:

~ mm

Accessories

~

Options:

R-value

Thickness:

Density (25 kg/m³ or 28 kg/m³):

R2.6

100 mm

25 kg/m³

R3.1

100 mm

28 kg/m³

R3.6

140 mm

25 kg/m³

R4.3

140 mm

28 kg/m³

R5.0

190 mm

25 kg/m³

R6.3

200 mm

25 kg/m³

 

Accessories:

Rigid substrate guards to plumbing penetrations and pipework to sub-floor, to protect recessed luminaires, auxiliary electrical items and other fixtures to floors as required.

Blow-In-Blanket (BIB)

Recessed Luminaires

Infill insulation: Earthwool® glasswool insulation ceiling segment to equivalent R-value for recessed luminaires.

Ceilings, skillion roofs, membrane roofs/decks insulation
4.3
JET STREAM® MAX: CEILINGS

Location:

~

Brand:

Jet Stream® MAX

Design Density:

~ kg/m³

R-value:

R ~

Thickness:

~ mm

Accessories

~

Options:

R-value at 25kg/m³

Thickness:

Density (25 kg/m³ or 28 kg/m³):

R2.6

100 mm

25 kg/m³

R3.1

100 mm

28 kg/m³

R3.6

140 mm

25 kg/m³

R4.3

140 mm

28 kg/m³

R5.0

190 mm

25 kg/m³

R6.3

200 mm

25 kg/m³

 

Accessories:

Rigid substrate guards to plumbing penetrations and pipework to sub-floor, to protect recessed luminaires, auxiliary electrical items and other fixtures to floors as required.

Blow-In-Blanket (BIB)

Recessed Luminaires

Infill insulation: Earthwool® glasswool insulation ceiling segment to equivalent R-value for recessed luminaires.

4.4
JET STREAM® MAX: SKILLION ROOFS

Location:

~

Brand:

Jet Stream® MAX

Design Density:

~ kg/m³

R-value:

R ~

Thickness:

~ mm

Accessories

~

Options:

R-value at 25kg/m³

Thickness:

Density (25 kg/m³ or 28 kg/m³):

R2.6

100mm

25kg/m³

R3.1

100mm

28kg/m³

R3.6

140mm

25kg/m³

R4.3

140mm

28kg/m³

R5.0

190mm

25kg/m³

R6.3

200mm

25kg/m³

 

Accessories:

Rigid substrate guards to plumbing penetrations and pipework to sub-floor, to protect recessed luminaires, auxiliary electrical items and other fixtures to floors as required.

Blow-In-Blanket (BIB)

Recessed Luminaires

Infill insulation: Earthwool® glasswool insulation ceiling segment to equivalent R-value for recessed luminaires.

4.5
JET STREAM® MAX: MEMBRANE ROOFS AND DECKS

Location:

~

Brand:

Jet Stream® MAX

Design Density:

~ kg/m³

R-value:

R ~

Thickness:

~ mm

Accessories

~

Options:

R-value at 25kg/m³

Thickness:

Density (25 kg/m³ or 28 kg/m³):

R2.6

100mm

25kg/m³

R3.1

100mm

28kg/m³

R3.6

140mm

25kg/m³

R4.3

140mm

28kg/m³

R5.0

190mm

25kg/m³

R6.3

200mm

25kg/m³

 

Accessories:

Rigid substrate guards to plumbing penetrations and pipework to sub-floor, to protect recessed luminaires, auxiliary electrical items and other fixtures to floors as required.

Blow-In-Blanket (BIB)

Recessed Luminaires

Infill insulation: Earthwool® glasswool insulation ceiling segment to equivalent R-value for recessed luminaires.