DriStud W8 White Faced Foil Insulation

Fire Retardant Medium Weight White Faced Foil Insulation

Categories: , ,

Product Overview

DriStud W8 is a Medium Weight, Extra Heavy Duty, Synthetic, Fire Retardant, 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 W8 offers Superior Strength, Durability 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.

We recommend using Safety Mesh or Hexagonal Netting to support DriStud W8.

Resources - Downloads

Technical Properties

Total weight153 ±5 g/m2
Flammability indexAS1530.2-1993Low
DutyAS/NZS 4200.1:1994Extra heavy
Resistance to water penetrationAS/NZS 4201.4:1994Water Barrier
Vapour barrierASTM E96Medium


  • Fire Retardant
  • Extra Heavy Duty Reflective Foil Insulation
  • Superior Strength, Durability and Tear Resistance
  • Advanced Resistance to Heat
  • Vapour and Moisture Barrier
  • Light weight & Flexible
  • 97% Reflectivity
  • Excellent light diffuser


  • Metal roof sarking

Roll sizes

  • 1350mm x 56m (75m2)


  • DriStud W8 has been tested to AS/NZS 4200:1994 and meets all the requirements of the NZBC Clauses B2,
  • Durability (B2.3.1[b] 15 years), E2 External Moisture E2.3.2, F2 Hazardous Building Materials F2.3.1.

Special Requirements

Buildings of the following types using metal cladding should have a sealed vapour barrier and are subject to specific design.

  • Swimming pools.
  • Buildings containing liquids stored in open containers.
  • Buildings where water is used in manufacturing, cleaning or storage processes.
  • Ice rinks, cold stores and freezers.
  • Buildings where unvented gas heating is used.

A vapour barrier incorrectly located on the cold side of a structure or poorly installed can result in a rapid build-up of cavity or interstitial condensation and result in high costs for rectifying defects and damage. Cold stores, freezers or buildings where the temperature is near or below 0° all require a fully sealed vapour barrier located on the warmer outer side of the insulation but are subject to specific design.