Polyiso Vs Xps Attic

A thermosoftening plastic or thermoplastic is a polymer that softens or turns to a liquid when heated.

Polyiso vs xps attic.

Polyiso is a thermoset material meaning it is permanently rigid and cannot be melted back to liquid form. So if you are looking for suggestions we would say go for the eps and if you want added protection source one with a foil backing. For mineral fiber board r values vary between supplier but are around r 4 0 inch significantly less than for polyiso. A thermosetting plastic also known as thermoset is a polymer material that irreversibly cures.

Xps is classified as a thermoplastic material. I think there are two good choices for exterior rigid foam insulation. Some of the key attributes are shown here. There are a number of factors that are very important to the installer and building owner but are not part of the specifications.

Xps is degraded by uv light but the facers on polyiso insulation protect the core from such damage. Thermoset materials are generally stronger that thermoplastic due to the network of bonds and are better suited for high temperature applications. The difference between polyiso eps xps foam insulation styrofoam. In this video dow chemical rep kevin and i will tell you about the differences between.

Extruded polystyrene xps is somewhat lower than polyiso. Polyiso is compatible with a large number of roof and wall systems too. Another difference between the polyiso and xps insulation concerns ultraviolet light.