What is polyiso? Polyisocyanurate thermal insulation, also referred to as polyiso, PIR, or ISO, is a popular low slope commercial building roof insulation. It is a thermoset, closed-cell foam that is an optimal insulation solution for low slope roofs. It is also available as a high density cover board that can be used in building envelope applications. Polyiso products are a reliable alternative to other fibrous and rigid foam plastic insulation, as they can offer the following benefits.
- High R-value per inch compared to other insulation products
- Requires less embodied energy to manufacture than mineral wool
- Compressive strength allows polyiso to stand up to foot traffic from routine maintenance
- Unique chemical bonds allow for outstanding resistance to fire; thermoset material doesn't melt when exposed to flame (ASTM E84)
- Compatible with most construction adhesives, roof coverings, and attachment systems.
- Cost-efficient polyiso insulation is one of the smartest investments you can make when insulating your building. All Elevate polyiso insulations use EPA-approved blowing agents and incorporates a HCFC-free blowing agent that does not contribute to the depletion of the ozone layer (ODP-free).
