DriStud W9 is a heavy weight, fire retardant, medium duty white faced foil insulation specifically designed for commercial roofs and roof sarking with a high water barrier and medium vapour barrier classification.
Due to its multi-layer structure DriStud W9 offers ease of installation and acts as a barrier to radiant heat, moisture, drafts and dust.
When installed correctly with the white facing down and the reflective foil facing the air cavity it will also provide extra R-Value, a clean white finish and will increase light diffusion and reflection.
Extra heavy weight, reflective foil insulation and radiant barrier
DriStud W9 is designed for use on a roof and roof sarking in commercial, industrial and farm buildings in all regions of New Zealand. Durability may be affected by environmental factors, including airborne pollutants.
The outer construction envelope of this product should be installed the same day as the metal roof.
To ensure optimal thermal insulation performance, as well as satisfactory durability, a 25mm air space adjacent to the foil side of the product is recommended.
Limitations on Use
DriStud W9 is not designed to withstand prolonged direct exposure to the elements.
The aluminium foil should not come into contact with wet concrete or mortar, as the aluminium is susceptible to alkali corrosion.
Statement of Building Code Compliance
DriStud W9 has been tested to AS/NZS 4200:1994 and meets all the requirements of the NZBC:
Clause B2 Durability: B2.3.1(b) (15 years)
Clause E2 External Moisture: E2.3.2
Clause F2 Hazardous Building Materials: F2.3.1
Other Performance Attributes
Total weight: 230 ±5 g/m2
Flammability Index: AS1530.2-1993 Low
Duty: AS/NZS 4200.1:1994 Medium
Resistance to water penetration: AS/NZS 4201.4:1994 High