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Technical Information

  • Technical Information

Extruded Polystyrene Delivers Higher R-Values than Expanded Polystyrene in Below-Grade Applications, According to New University of Alaska Fairbanks Study (PDF)

Additional Technical Information

The Effects of Open Porosity on the Strength and Water Absorption of RCPS Foam Board Insulations

Technical Insights, Below Grade Series ID: TI-BG-13

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The Truth about Water Absorption

Technical Insights, Below Grade Series ID: TI-BG-14

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XPS Is the Proven Choice for Protected Membrane Roof Assemblies

Technical Insights, Protected Membrane Series ID: PMRA-03

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Aging of XPS Insulation in Relation to a 15-Year Thermal Resistance Design Life

ID: LTTR Tech Brief

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Considerations for Specifying Rigid, Cellular Polystyrene Insulations in Various Applications (PDF)

By Rob Brooks, Tiffany Coppock, Matt Dillon, Mike Fischer; Meng Guo, Valentina Woodcraft - IIBEC Interface

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Addendum to Demystifying Rigid, Cellular Polystyrene Insulations Aging of XPS Insulation in Relation to a 15-Year Thermal Resistance Design Life (PDF)

XPS Insulation Performance, Below Grade Series ID: IP-BG-04-Addendum

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