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DuPont Tyvek Metal is a breathable, fire retardant, self supporting (R2), synthetic roof underlay.
DuPont Tyvek Metal consists of DuPont Tyvek Supro combined with an 8mm drainage mat to maintain a separation layer between the roof cladding and the underlay.
It is made by bonding a polypropylene drainage mat to a two layer spunbonded polyethylene breathable layer and a non woven polypropylene sheet. This creates a strong, weather resistant barrier with excellent vapour permeability that reduces the risk of condensation in the roof system.
Building wind zones up to and including Extra High.
Recommended for standing seam or low profile roof cladding applications in skillion roof type constructions or any application where extra ventilation is required.
It is recommended for use as a self supporting roof underlay (R2) on roof pitches greater than 3º.
Suitable for the following roof applications:
To meet the requirements of NZBC, DuPont Tyvek Metal must be:
DuPont Tyvek Metal should not be:
Europe for over 10 years. New Zealand for 18 months.
The use of DuPont Tyvek Metal is considered an alternative solution complying with NZBC Clause E2.
DuPont Tyvek Metal, when installed in accordance with the recommended guidelines will meet or contribute to meet the following provisions of NZBC:
Weather Barrier Systems Limited’s purpose is to market branded, industry leading products that provide weather protection to buildings in New Zealand.