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If you have recently installed spray foam insulation in your house, shop or business, chances are pretty good you will need to coat it with fire retardant paint. The fire marshal is usually happy to explain that to you, and not let you back in the building until it is painted.We get a lot of business from people who didn't know they had to paint their foam. I love those folks.There are really just two standards - a 5 minute ignition barrier (for inaccessible crawl spaces), and a 15 minute therma …

SPF (spray polyurethane foam), like most other organic materials, is combustible. Although SPFs are formulated with flame retardants to meet the requirements of various construction codes and minimum performance standards there is still a need to provide further protection from fire. All foams must undergo some common fire tests such as ASTM E84, UL 723 and others, to determine how fast and how far a flame will travel across the surface, along with how much smoke is produced when the foam is exp …