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Polyiso’s Trusted Fire Performance Brings Benefits to Wall Market

Posted By Nathan Pobre, Thursday, May 17, 2018

Polyiso roof insulation has long been championed by the construction industry for its excellent fire and thermal performance. As the most widely used insulation product for low-slope commercials roofs, polyiso remains the only foam plastic insulation product for direct application to steel decks to earn FM Approval for Class 1 Roof System. Polyiso’s inherent fire resistance characteristics are due to its unique structure of strong isocyanate chemical bonds. This produces a versatile product that roofing contractors have come to rely on for all types of roof systems.

The same physical properties that make polyiso a top choice for roofs also make the product an excellent option for continuous insulation applications for both commercial and residential walls. Thousands of exterior wall assemblies with polyiso insulation meet the stringent NFPA 285 test standard. This enables polyiso insulation to be used in buildings of any type and any height. And offers design professional flexibility to combine polyiso with a wide variety of other wall components to construct attractive and resilient building envelopes.  

Polyiso wall insulation products also share the roofing products’ characteristic for high thermal resistance. Packing more R-value into every inch of product allows architects to reduce the thickness of wall assemblies. This creates advantages for the installation process and also can reduce the cost of other components like fastener and attachment systems. Furthermore, polyiso products can also serve as air, moisture and weather barriers in wall assemblies.  

Whether you are designing roofs or walls, polyiso insulation products check all the boxes for fire and thermal performance and overall versatility.

The following resources provide additional information on polyiso insulation’s excellent fire performance:

Tags:  fire performance  insulation  polyiso  r-value  walls 

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