POLYURETHANE FOAM (SPF): Spray
foam roofing starts out as two liquid components
- an isocyanate, known as the "A" component, and a resin (or polyol), the
"B" component. When the liquids are mixed at a one-to-one ratio, a chemical
reaction occurs and the mixture expands 20 or 30 times forming a solid, monolithic
(seamless), closed-cell, fully-adhered roof system that provides excellent
water-resistance and thermal insulating abilities.
adheres to just about everything so it can be installed over concrete, wood, steel, and
most existing roof systems (EXCEPT APP MODIFIED BITUMEN!) which saves on the expense of roof removal and
landfill fees. SPF mechanics can spray apply a tapered roof system with the foam which
eliminates the need for costly tapered insulation systems. The cants and vertical wall
terminations are also spray applied making them an integral part of the roof system and
minimizing additional component costs.