DuPont™ Tyvek® Metal

Roof Underlay

For Tough to Ventilate Roofs...

NZBC Compliance
NZBC Clause B2: Durability. Meets the requirement of NZBC B2..3.1 a) 50 years and b) 15years
NZBC Clause E2: External Moisture. Contributes to meeting these requirements
NZBC Clause F2: Hazardous Building materials. Meets this requirement and will not be a health hazard to people

Copyright © 2014 - 2017 Weather Barrier Systems Limited. All Rights Reserved.

DuPont™ Tyvek®  Metal is a "CodeMark™  Certified" breathable,  self supporting, roof underlay consisting of DuPont™ Supro Synthetic Roof Underlay with an integrated drainage mat. The drainage mat provides a separation layer between the roof cladding and the underlay. This helps condensation drain out of the roof and aids drying of the roof assembly. DuPont™ Tyvek® Metal is self supporting (spans up to 1200mm), weather resistant and  comes with a built in adhesive strip to facilitate sealing at overlaps.

DuPont™ Tyvek® Metal is absorbent and may be used behind "direct fixed" 

non absorbent  claddings.

DuPont™ Tyvek®  Metal is compatible with roof pitches greater than 3º

on the following roof applications:

  • Metal
  • Concrete Tile
  • Clay Tile
  • Asphalt Shingle

DuPont™ Tyvek®  Metal  is available in roll size: 1500mm x 25m (37.5m²)

Features and Benefits:

  • Manufactured & Backed by DuPont, a 212 year old company
  • Non kraft based meaning it may be exposed to rainfall during installation without affecting future durability or performance
  • Suitable in skillion roof type constructions or any application where extra ventilation is required
  • Manufactured from spun bonded high density polyethylene (HDPE) laminated to a polypropylene sheet meaning it is highly breathable and allows moisture vapour to escape, especially from the interior of the building reducing condensation buildup on the underside of the roof underlay
  • Excellent air and water resistance and not susceptible to abrasion or delamination during the production process
  • Can be installed in all wind zones (including extra high)
  • Helps reduce rain clatter & sound transmission
  • UV resistant for up to 120 days giving the installer more time to install roof
  • 1500mm wide roll covers more area per roll with less overlaps
  • No shrinkage which allows for maximum run lengths during installation
  • White underside provides for light diffusion properties making DuPont™ Tyvek Metal ideal for warehouse applications