Products / 4700 HFO Series Spray Polyurethane Foam

4700 HFO is a two-component, 1 to 1 by volume, 3 pound density spray polyurethane foam for roofing systems, formulated without HFCs. Its data sheet lists an R-value of 6.2 per inch (ASTM C518), 3 pcf core density, 55 psi compressive strength and a UL 790 Class A building code entry, with a maximum lift of 1.5 inches per pass. It is offered in fast, regular and slow speeds for different ambient temperature ranges.