The Best Products And Quality in Building Supplies
Polyiso is made up of four major components namely MDI, polyol, a flame retardant, and a blowing agent. When the 4 components are mixed and small amounts of surfactants and catalysts added, a heat-generating chemical reaction occurs and it causes the blowing agent to boil, expanding the foam and creating gas-filled cells with high thermal resistance or R-Value.
The polyiso we have in our stock use hydrocarbon blowing agent pentane for zero ozone-depletion. The R-Value is between 7.0 and 8.0, depending on the product.