The National Building Code of Canada specifies that Polyurethane foam insulation (PUFI) or foam plastic insulation must be protected by a thermal barrier in combustible construction other than in concealed spaces (i.e. attic, roof spaces or crawl spaces).

Our acceptable thermal barriers include a half inch minimum of plaster, gypsum board, plywood, hardboard, insulating fibreboard, particle board, Oriented Strand Board (OSB) or wafer board.

Fire retardant sprays are not acceptable as they have a tendency to crack and peel as observed by our Loss Prevention Team in the photo above.

As it can be expensive to add a thermal barrier, installers often leave it up to the homeowner to install the required thermal barrier. Many property owners are unaware of the need for a thermal barrier and invoices/estimates from insulation contractors will often have a disclaimer printed on them stating that the client understands that a thermal barriers needs to be provided.

If it is not covered, the off gassing is toxic to the occupants in the event of a fire. Please protect your foam insulation and help us to keep you and your families safe.

If you have any questions or concerns, please give us a call or contact your broker.