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


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DuPont™ Tyvek® Supro Plus is a "CodeMark™  Certified" synthetic, breathable, commercial grade, wall underlay that is fire retardant and can be installed in all wind zones, including extra high, per NZS 3604.

DuPont™ Tyvek® Supro Plus features a built in adhesive tape to provide maximum protection from air and water intrusion at overlaps.

DuPont™ Tyvek Supro Plus may also be used as a weather barrier under suspended timber floors or behind absorbent & non absorbent wall claddings, including:

  • Metal
  • Fiber Cement
  • Timber/cedar
  • Brick
  • Asphalt Shingle
  • Stucco/Plaster

DuPont™ Tyvek® Supro Plus is available in roll size: 1500mm x 50m (75m²)

Features and Benefits:

  • CodeMark™  Certified to ensure compliance with NZBC E2/AS1
  • Manufactured & Backed by  DuPont, a 212 year old company
  • Non paper based and NON ABSORBENT meaning it may be exposed to rainfall during installation without affecting long term, bulk water resistance
  • 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
  • Fire retardant
  • UV resistant for up to 120 days giving the installer more time to install cladding
  • 1500mm wide roll covers more area per roll with less overlaps
  •  No shrinkage which allows for maximum run lengths during installation

DuPont™ Tyvek® Supro Plus

Wall Underlay

A High Performance  Underlay compatible with  most claddings that comes with a built in adhesive strip to help seal overlaps...