GreenSeal 2.8 is a sprayed-in-place, nominal 60 psi compressive strength, rigid, HFC-blown, closed-cell spray polyurethane foam (SPF) roofing system. This two-component SPF consists of GreenSeal A Component and GreenSeal 2.8 B Component resin. GreenSeal 2.8 provides an R-value of 6.3 per inch and a continuous insulation without thermal breaks. GreenSeal 2.8 SPF roofing systems provide excellent wind uplift resistance, are self-flashing and seamless, and the closed-cell nature provides a durable, leak-resistant roof.