Polyiso WRB Installation Guide Now Available

Originally published by the following source: SBC MagazineDecember 13, 2019
by PIMA Staff


Polyiso is a closed-cell, rigid foam board insulation used primarily on the roofs and walls of offices, health facilities, warehouses, retail and industrial manufacturing facilities and educational institutions. Because of its high thermal performance, it is an important foam sheathing product consideration of energy-aware homebuilders and consumers.

In addition to being a continuous insulation solution, Polyiso can also be used as an effective water-resistive barrier (WRB) system.  If you’ve never used Polyiso insulation sheathing in this way, a new online design and installation guide has been created to ensure optimal building performance.

This seven-step guide walks through everything from code considerations to installation best practices.  In addition to the online guide, an education presentation is available for download that can be used in conversations and trainings with building designers, installers and code officials.

For more information on Polyiso insulation used as a WRB system, please refer to these resources: