Polyiso Vs Xps Attic

Xps is a thermoplastic material which softens or turns to a liquid when heated.

Polyiso vs xps attic. Some of the key attributes are shown here. Xps is degraded by uv light but the facers on polyiso insulation protect the core from such damage. Extruded polystyrene xps is somewhat lower than polyiso. There are a number of factors that are very important to the installer and building owner but are not part of the specifications.

Polyiso is compatible with a large number of roof and wall systems too. 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. Thermoset materials are generally stronger that thermoplastic due to the network of bonds and are better suited for high temperature applications. Another difference between the polyiso and xps insulation concerns ultraviolet light.

We always choose and recommend eps over xps due to the fact that xps has much higher greenhouse gas emissions than eps. A thermosetting plastic also known as thermoset is a polymer material that irreversibly cures. A thermosoftening plastic or thermoplastic is a polymer that softens or turns to a liquid when heated. In this video dow chemical rep kevin and i will tell you about the differences between.

The difference between polyiso eps xps foam insulation styrofoam. I think there are two good choices for exterior rigid foam insulation. For mineral fiber board r values vary between supplier but are around r 4 0 inch significantly less than for polyiso.