Polyiso Vs Xps Attic

Polyiso is classified as a thermoset material.

Polyiso vs xps attic.

Xps is classified as a thermoplastic material. Xps is degraded by uv light but the facers on polyiso insulation protect the core from such damage. 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. We always choose and recommend eps over xps due to the fact that xps has much higher greenhouse gas emissions than eps.

Xps is a thermoplastic material which softens or turns to a liquid when heated. Some of the key attributes are shown here. A thermosoftening plastic or thermoplastic is a polymer that softens or turns to a liquid when heated. Extruded polystyrene xps is somewhat lower than polyiso.

I think there are two good choices for exterior rigid foam insulation. A thermosetting plastic also known as thermoset is a polymer material that irreversibly cures. There are a number of factors that are very important to the installer and building owner but are not part of the specifications. 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. Another difference between the polyiso and xps insulation concerns ultraviolet light. Polyiso is compatible with a large number of roof and wall systems too.