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Is spray foam a Class 1 foam (classified by UL)?

April 26, 2017class Classified foam spray UL

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Is spray foam a Class 1 foam (classified by UL)?

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All One-Component Handi-Foam Spray Foam Insulation carries the UL classification label on each container. Handi-Foam Two-Component Spray Foam is available in Class 1 (E-84) upon request. The local building authority should be consulted for foam classification requirements in specific applications. “Class 1” foam means that the foam insulation has been tested by Underwriter’s Laboratories(UL)for flame spread and smoke development, according to the ASTM E-84 tunnel test for surface burning characteristics. Most major building code authorities conside “Class 1” foam to meet these parameters: Flame spread <25* and smoke developed <450. *Whenever numerical flame spread ratings are given, they are not intended to represent hazards under actual fire conditions.