What are the different types of spray foams ?
There is open cell and closed cells foams. Open cell structure is tight enough to provide an excellent thermal and air barrier but open enough to allow vapor drive and moisture to penetrate. Closed cell structure is completely closed completely shutting off air, vapor and moisture penetration as well as providing the best thermal performance attaining R-7 per inch. Open cell is typically a 1/2 pound in density which is 1/2 pound per cubic foot cured and provides an R-3.5 per inch. Closed cell typically comes in 1.7, 2.0 and 2.7 pound density’s.
