The iso industry is going through a number of changes. The message to roofing contractors is simple: You really need to pay attention.
There is no doubt which material is king in the category of high-thermal roof insulation. Polyisocyanurate roof insulation (“iso,” “polyiso”) is, and indeed has been for a while, the magnum opus of low-slope roof insulation. After so many years of successful service, there is a tendency to take for granted that it will always be there and will always provide a sure and economical solution.