Pur calamitous was especially for out-of-door use. Its calamitous color intoThe encompassing environment and never looks fecal. It will and stopThe passage of air, gases, water, dust, fibers, and levelheaded into a building. Sealing air leaks also number of places than insects can use to enter a house. Pur calamitous is a strict, expanding, closed-cell foam that is applied with a foam gun. One 750 ml canister, 1,200 linear feet of 1/2 '' bead. It is in ten minutes and trimmable in thirty minutes.