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DriStud F3 - Fire Retardant Double Sided Foil

DriStud F3 is a standard weight, fire retardant, medium duty, double sided reflective foil insulation, designed for use as insulation and condensation control under metal in commercial and industrial buildings.

Key Features
  • High water barrier, medium vapour barrier product, ideal for steel roofs.
  • Provides extra R-value from inward and outward facing reflective surfaces when used in conjunction with adjacent air spaces.
Scope of Use
  • DriStud F3 is designed for use as a commercial roof and roof sarking in commercial and farm buildings in all regions of New Zealand.
  • Durability may be affected by environmental factors, including airborne pollutants, if used in industrial or farm buildings. 
  • 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 F3 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

When specified and installed in accordance with the requirements of the Installation Guide, DriStud F3 will comply with the following provisions of the NZ Building Code;

  • Clause B1 Structure
  • 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: 103 ±5 g/m2
  • Flammability Index: AS1530.2-1993 Low
  • Duty: AS/NZS 4200.1:1994 Medium
  • Reflectivity Side A: 97% Side B: 97%
  • Resistance to Water Penetration: AS/NZS 4201.4:1994 High
  • Vapour barrier: ASTM E96 Medium
B1 Structure compliant
B2 Durability compliant
E2 External Moisture compliant
External Moisture
F2 Hazardous Building Materials compliant
Hazardous Building Materials
Product Technical Statement
Comparison Chart
Installation and Operation

Products include DriStud wall and roof underlays, Window Flashing Tape, Vent NZ passive ventilation system and Proctor construction membranes.

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