Envelope Seal
Product Name:
Product Description:
The Canadian Mortgage and Housing Corporation (CMHC) has determined that the window to wall interface is the major contributor to moisture problems in buildings. Envelope Seal is an elastomeric co-polymer thermal plastic that acts as a primary barrier to moisture and air penetration at the window to wall interface. Its physical properties allow it to adhere to most surfaces while staying flexible over a wide range of temperatures. These characteristics enable the product to move and adjust with building settling, while maintaining a watertight seal around building openings. Use of Envelope Seal is part of the Built Green initiative, and contributes to reducing new home warranty claims while improving air tightness by as much as 43%.
Envelope Seal bonds directly from the flange of the window or door to the substrate of the building whether it be OSB, plywood, or fiberglass board. The excellent adhesion of the product to most surfaces ensures that no moisture or air will penetrate the opening. Furthermore, the product