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Is spray foam insulation fire-proof?

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One of the biggest questions that property owners have when looking at spray foam insulation, is regarding its fire safety. At BHR, we can provide fire resistant spray foam insulation, so you can rest assured knowing that your home is not only unbeatably insulated, but that it won’t catch alight.  

Does polyurethane insulation have a flame rating?

Polyurethane insulation meets Class 1 surface spread of flame rating when tested to BS 476: Part 7. A Class 0 flame rating can be achieved by using WALLTITE® FB 100 intumescent coating with the foam.

What is a thermal barrier?

If you opt for 30-minute fire resistance once your spray foam insulation has been installed, it must be covered by plasterboard or a thermal barrier of some kind. A thermal barrier is what keeps the spray foam away from fire, thus increasing fire resistance. The International Residential Code (IRC) and International Building Code (IBC) both include requirements for thermal barriers.

Do I need an ignition barrier?

If a home has spray foam insulation in an attic, it may well be separated from the living space by a thermal barrier. However if the spray foam is still exposed in the attic, it may need an ignition barrier.


Are you looking for spray foam insulation for your commercial property? Get in touch with us today to find out about how we can tailor a service to your property, call 0800 690 6338.