All Seasons Foam is a one part polyurethane expanding foam with an extended temperture range which 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 1-4 hours and becomes fully cured in 12-15 hours. Extended application temperature range allows use at temperatures as low as -5ºC / 23ºF. May be used at -10ºC / 14ºF if can is stored at 25ºC / 77ºF for 8 hours before use. 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 a R-5 equivalent value when used in place of traditional installation methods.