Code updates for long-term polyiso testing
January 31, 2014
A recent standard adoption has made the National Building Code of Canada (NBC) more consistent with other North American codes when it comes to test methods for measuring long-term thermal resistance (LTTR) of polyisocyanurate (polyiso) foam insulation.
The implementation of Underwriters Laboratories of Canada (CAN/ULC)-S704-11, Standard for Thermal Insulation, Polyurethane, and Polyisocyanurate Boards, Faced, references the test method CAN/ULC-S770-09, Standard...