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.
Undergoing CodeMark certification to ensure compliance with New Zealand Building Code E2/AS1 requirements
8mm mesh drainage mat provides a drainage and ventilation plane by separating the underlay from the roof cladding
8mm mesh drainage mat provides a slip layer between the roof cladding and the roof underlay which minimizes noise transmission into the building from rain clatter
High Moisture Vapour Transmission Rate allowing buildings to dry out from the inside helping reduce condensation
Self-supporting for spans up to 1200mm
Non Kraft Paper based meaning it may be exposed to rainfall during installation without affecting durability or performance
Functional layer of 175 microns (up to 7 times the thickness of other synthetics) provides a robust, durable and 120 day UV resistant underlay to withstand job site conditions
No shrinkage which allows no maximum run length on installation
1.5m wide roll with integrated tape layer which covers more area per sheet with less number of overlaps