Compliance Statement
Scope of Use
Vapour Shield is intended for use as a vapour barrier ideally for skillion roof construction where condensation and moisture vapour control are required behind internal cladding. It is laid as a waterproof membrane until the roof is fixed, after which it acts as a vapour barrier layer during its serviceable life.
Where a vapour barrier is installed, its location within the built element is critical - for typical habitable spaces, it must be on the warm side of the element. Incorrect locating a vapour barrier is likely to cause more problems than it solves. When located on the cold side of a building element, the risk of condensation forming on the vapour barrier significantly increases.
To perform effectively, a vapour barrier must also be airtight as typically airflows carry moisture at a much greater rate than diffusion, which. would undermine the effectiveness of the vapour barrier.
New Zealand Building Code (NZBC)
The product will, if employed in accordance with the supplier's installation and maintenance requirements, assist with meeting the following provisions of the building code:
- Clause B2 Durability: Performance B2.3.1(a), B2.3.1(b)
Thermakraft Vapour Shield will meet the performance requirements of NZBC Clause B2 Durability (B2.3.1.a 50 years), and B2.3.1b 15 years
- Clause E2 External moisture: Performance E2.3.2
Thermakraft Vapour Shield will meet the performance requirements of NZBC E2 External Moisture provided the product is:
- Used and installed according to Thermakraft literature.
- Installed MRM Code of Practice.
- Installed. under the guidance of a licensed building practitioner. Is compatible with the cladding system used. *
* Roof cladding system compatibility testing must be done first before installation.
Notes
Specialised design is required for code compliance. Product must be:
- Used and installed according to Kingspan Insulation’s literature
- Installed to the NZ Metal Roof and Wall Cladding Code of Practice
- Installed under the guidance of a licensed building practitioner
- Is compatible with the cladding system used*
* Roof cladding system compatibility testing must be done first before installation.
Evidence
The product meets the requirements set out in the following documents, or relevant parts of cited standards within the documents:
Specialised design is required for code compliance.Product must be:
- Used and installed according to Kingspan Insulation’s literature
- Installed to the NZ Metal Roof and Wall CladdingCode of Practice
- Installed under the guidance of a licensed building practitioner
- Is compatible with the cladding system used*
* Roof cladding system compatibility testing must be done first before installation.