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Vapor-Bloc® SA

Product Description
Installation and
Technical Literature

Vapor-Bloc® SA is a self-adhered vapour barrier membrane consisting of an SBS rubberized asphalt compound which is integrally laminated to a blue cross-laminated polyethylene film. The membrane is specifically designed to be self-adhered to a prepared substrate.

Vapor-Bloc® SA is a self-adhered vapour barrier membrane designed to be adhered directly to roof decks. Ideal application surfaces include steel decks, gypsum board and plywood or certain insulation panels prior to the application of finished roof coverings. The main function of Vapor-Bloc® SA is to serve as a full coverage vapour barrier and secondary waterproofing layer in the composition of roof assemblies.


  • 48” wide roll provides increased coverage over steel decks
  • SBS modified membrane can be applied in temperatures as low as –12°C
  • Excellent adhesion to prepared substrates of steel decks, gypsum board, concrete, plywood
  • Excellent compatibility with Bakor adhesives and air barrier membranes
  • Self adhesive, no flame required

Data Sheets

Vapor-Bloc® SA Data Sheet Download PDF      

SDS Sheets

Vapor-Bloc® SA SDS Sheet Download PDF