Powers TriggerFoam Pro Expanding Polyurethane Foam, Fire Block Formula 29 oz. - 12/CS

TriggerFoam Pro FIREBLOCK is a one-part polyurethane expanding foam, designed to effectively block the spread of smoke and flame in Type V residential construction. Triggerfoam Pro sets into its final form by using moisture present in the air. When installing the foam, consideration should be given to the 2-3 times expansion of the foam after it leaves the nozzle. The surface of the foam initially dries within 1-5 hours and becomes fully cured in 12-15 hours. TriggerFoam Pro sets well on ordinary surfaces such as concrete, brick, metal, etc. Surfaces do not require preparation and can also be damp. After installation, it is recommended that a full 24 hours elapse prior to scraping, sanding, staining or painting. The foam has an R-5 equivalent value when used in place of traditional installation methods.