3114KC
KNAUF CLIMAFOAM® XPS CONCRETE SLAB 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 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 Knauf Insulation ClimaFoam® extruded polystyrene (XPS) board for use as thermal insulation:

Modify / expand this clause to suit requirements of this specification section

Note- Knauf Insulation Technical Datasheet recommend use of ClimaFoam® is restricted to areas not exposed to fire i.e. underground.

1.1
RELATED WORK

Refer to ~ for ~.

Include cross references only to other work sections where they include directly related work.

Refer to the appropriate concrete section for insulation under concrete slabs.

Refer to the appropriate concrete section(s) for reinforcement, also placing and curing of concrete.

Documents
1.2
DOCUMENTS

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

NZBC B1/VM1

Structure

NZBC H1/AS1

Energy Efficiency

NZS 3604

Timber-framed buildings

AS/NZS 4671

Steel reinforcing materials

AS/NZS 4859.1:2002

Materials for the thermal insulation of buildings - Part 1 General criteria and technical provisions

BS EN13164

Thermal Insulation Products for Buildings - Factory Made Extruded Polystyrene Foam (XPS) Products - Specification

Delete from the DOCUMENTS clause any document not cited.  List any additional cited documents. The following are related documents and if referred to in the work section need to be added to the list of DOCUMENTS.

 

NZBC C/AS2

Protection from fire

NZBC E3/AS1

Internal moisture

NZBC B2/AS1

Durability

NZBC F2/AS1

Hazardous building materials

AS/NZS 4200.1

Pliable building membranes and underlays - Materials

NZS 4220

Energy conservation in non-residential buildings

NZS 4243.1

Energy efficiency - Large buildings - Building thermal envelope

NZS 4246

Energy efficiency - Installing bulk thermal insulation in residential buildings

AS/NZS 4534

Zinc and zinc/aluminium-alloy coatings on steel wire

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

BRANZ publication

House insulation guide

 

NOTE: AS/NZS 4859.1:2002 is cited in the NZBC H1/AS1, but superseded by AS/NZS 4859.1:2018 Part 1 and AS/NZS 4859.2:2018 Part 2

1.3
MANUFACTURER/SUPPLIER DOCUMENTS

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

Knauf Insulation ClimaFoam® XPS Brochure

Knauf Insulation ClimaFoam® XPS Datasheet

 

Copies of the above literature are available from:

Web:

www.knaufinsulation.co.nz

Email:

tech.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's and/or supplier's 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.

Requirements
1.4
QUALIFICATIONS

Work to be carried out by trades people experienced, competent and familiar with the Knauf Insulation materials and techniques specified.

1.5
NO SUBSTITUTIONS

Substitutions are not permitted to any specified Knauf Insulation products, components or accessories.

1.6
FIRE PROTECTION

ClimaFoam® is a combustible material.  Ensure a minimum clearance of 100mm between ClimaFoam® and heat sources or electrical cables.  For insulation clearances to inbuilt recessed hot appliances - refer to NZS 4246.

Do not store product close to open flames or oither ignition sources..  Refer to Technical Datasheet                                        .

2
PRODUCTS
Materials
2.1
KNAUF INSULATION CLIMAFOAM® XPS BOARD - UNDER SLAB

Rigid extruded polystyrene (XPS) board to NZBC H1/AS1, AS/NZS 4859.1, BS EN13164.  Water resistant.  Lightweight with a compressive strength of 250kPa.  Sheet size 2200mm long x 1200mm wide, thickness range from 30mm to 75mm, with shiplap edge detail.  Refer to SELECTIONS.

 

Thickness (mm)

Thermal Conductivity (15°C)

R-Value (m²K/W)

Compressive Strength kPa

Edge Detail

30

0.028

1.1

250

Shiplap

40

0.028

1.4

250

Shiplap

50

0.028

1.8

250

Shiplap

75

0.028

2.7

250

Shiplap

Modify title, select board thickness, to suit project requirements.

NOTE - NZBC H1/AS1 references AS/NZS 4859.1; AS/NZS 4859.1 references BS EN 13164

2.2
KNAUF INSULATION CLIMAFOAM® XPS BOARD - SLAB EDGE AND BEHIND RETAINING WALLS

Rigid extruded polystyrene (XPS) board to NZBC H1/AS1, AS/NZS 4859.1, BS EN13164.  Water resistant.  Lightweight with a compressive strength of 250kPa.  Sheet size 2200mm long x 1200mm wide, thickness range from 30mm to 75mm,

with shiplap edge detail.  Refer to SELECTIONS.

 

Thickness (mm)

Thermal Conductivity (15°C)

R-Value (m²K/W)

Compressive Strength kPa

Edge Detail

30

0.028

1.1

250

Shiplap

40

0.028

1.4

250

Shiplap

50

0.028

1.8

250

Shiplap

75

0.028

2.7

250

Shiplap

Modify title, select board thickness, to suit project requirements.

NOTE - NZBC H1/AS1 references AS/NZS 4859.1; AS/NZS 4859.1 references BS EN 13164

3
EXECUTION
Conditions
3.1
DELIVERY

Keep materials dry in transit.  Take delivery of materials in an undamaged in condition.  Reject all damaged materials.

3.2
STORAGE

Accept materials undamaged and dry and store in a location that protects them from the weather.  Do not store close to open flames or other ignition sources.  Avoid distortion, stretching, puncturing and damage to edges of sheet materials.

3.3
HANDLING

Wear protective clothing as necessary and when handling, avoid delamination or distortion of the rectangular form.

3.4
PROTECT

Do not subject the ClimaFoam® XPS board to prolonged saturation or exposure to sunlight.  Do not allow the XPS board to come into contact with solvents.

XPS is a closed cell material and does not readily absorb water.  Even in this situation it maintains its shape, size, structure, and physical appearance.

Application - under concrete slab
3.5
LAY POLYTHENE

Lay polythene layer to NZS 3604: clause 7.5.4, Damp-proof membrane.

Modify or delete this clause when specifing in an approriate concrete section. Polyethylene is often described as "polythene" in New Zealand.  A subgrade damp-proof membrane is sometimes described as a vapour barrier.

NOTE: This clause describes the minimum acceptable membrane for damp-proofing under a concrete floor slab, as set out in NZS 3604.

3.6
KNAUF INSULATION CLIMAFOAM® XPS BOARD - UNDER CONCRETE SLAB

Install the ClimaFoam® XPS Boards once the polythene DPM has been laid.  Place the ClimaFoam® XPS boards on top of the polythene DPM and butt together.  Do not place the boards under any footings or thickenings.  Cut holes in the boards where necessary with a sharp knife to accommodate any services.  Lay reinforcing steel mesh over the boards on mesh chairs.

3.7
REINFORCEMENT

Lay welded reinforcing mesh.  Bars to AS/NZS 4671.  Grade 300E deformed, other than for ties, stirrups and spirals, unless shown otherwise on the drawings.  Welded reinforcing mesh to AS/NZS 4671, 500E mesh to AS/NZS 4671 as modified by NZS B1/VM1.

Modify or delete this clause when specifing in an approriate concrete section. Providing more detail on types of bars and mesh as appropriate.

3.8
PRE-PLACEMENT INSPECTION

Do not place concrete until all excavations, boxing and reinforcing have been inspected and passed by the Building Consent Authority.

Add any requirements for inspection by a chartered professional engineer, building certifier or contract administrator.

Application - concrete slab edge
3.9
KNAUF INSULATION CLIMAFOAM® XPS BOARD - CONCRETE SLAB EDGE

Install the ClimaFoam® XPS Board to form a continuous barrier around the slab edge before the concrete is poured.  Cut holes in the boards where necessary with a sharp knife to accommodate any services.

Completion
3.10
CLEANING

Remove debris, unused materials and elements from the site.  Clean soiled or marked work.  Replace damaged, cracked or marked elements.  Leave the whole of this work to the standard required by following the execution procedures.

3.11
PROTECT

Protect new work from damage.

4
SELECTIONS
4.1
KNAUF INSULATION CLIMAFOAM® XPS BOARD - UNDER SLAB

Location:

~

Brand:

Knauf Insulation ClimaFoam®

Size:

2200mm x 1200mm

Thickness:

~

kPa:

250

R value:

~

Edge detail:

~

Thickness (mm)

Thermal Conductivity (15ºC)

R-Value (m²K/W)

Compressive Strength kPa

Edge Detail

30

0.028

1.1

250

Shiplap

40

0.028

1.4

250

Shiplap

50

0.028

1.8

250

Shiplap

75

0.028

2.7

250

Shiplap

4.2
KNAUF INSULATION CLIMAFOAM® XPS BOARD - SLAB EDGE AND BEHIND RETAINING WALLS

Location:

~

Brand:

Knauf Insulation ClimaFoam®

Size:

2200mm x 1200mm

Thickness:

~

kPa:

250

R value:

~

Edge detail:

~

Thickness (mm)

Thermal Conductivity (15ºC)

R-Value (m²K/W)

Compressive Strength kPa

Edge Detail

30

0.028

1.1

250

Shiplap

40

0.028

1.4

250

Shiplap

50

0.028

1.8

250

Shiplap

75

0.028

2.7

250

Shiplap