Polyisocyanurate / Green Building & Sustainable Home Renovation Information & Advice

...polyisocyanurate (Polyiso) Thermal drift in extruded polystyrene (XPS) Comparing stable and drifting foams (Polyiso, XPS, and EPS) In brief How R-Values are calculated and why they vary Design and building professionals as well as homeowners in the know, most commonly evaluate insulation in terms of R-Value per inch....

Polyisocyanurate (PIR), Extruded Polystyrene (XPS), Expanded Polystyrene (EPS) or Styrofoam? When building or renovating a high-performance building envelope there are really three main kinds of rigid foam panels you are going to have to choose from - Polyisocyanurate known as Polyiso (PIR), Extruded Polystyrene (XPS) ...