Weather Defence® Rigid Plasterboard

Siniat Weather Defence® is an award-winning, rigid air barrier which is used behind facade cladding systems to regulate indoor environment. It has transfixed building envelope construction and performance.

PlastaMasta Southern Sydney - A supplier of Siniat Products

Product Features

  • Rigid air barrier with Class 4 vapour permeance.
  • Can be exposed to either for up to 12 months.
  • Enclose buildings faster so the interior cutout can start sooner.
  • Resistant to water penetration according to AS/NZS 4201.4.
  • Provides a solid weathertight barrier.
  • Resistant to mould growth.
  • Good acoustic performance.
  • Distinctive purple colour.
  • Available in 13 x 1200 x 2400mm sheets.
  • Class 4 vapour permeance for climate zones 6, 7 & 8.

Additional Information

Dimensions 240 × 1.3 × 120 cm




Sheet Size

1200mm x 2400mm


Siniat Weather Defence Rigid Plasterboard Product Data Sheet
Siniat Weather Defence Rigid Plasterboard Product Catalogue