Thermocore SIPs Lead the Industry in R-Value

February 28, 2025

R-Value and energy efficieny are some of the biggest factors why builders decide to use SIPs for their projects. Like most things in the housing industry, not all SIPs are created equal, especially when it comes to actual R-Value. 

If we look at industry wide R-Values as published by SIPA (Structural Insulated Panel Association), we can see that R-Values vary greatly in both the panel width and which type of insulating material is being used. EPS (Expanded Polystyrene a.k.a. styrofoam) provides the lowest energy efficiency per inch amongst SIPS, while polyurethane provides the highest. When compared to Thermocore's proprietary poly-iso insulating foam, which also includes a class 1 fire rating, the leader in R-Value per inch becomes quite clear.

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(Source: Residential Design with Structural Insulated Panels, SIPA 2023)

 

 

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Thermocore's patented 4" panel also means that standard window and door jambs can be used. This combined with the R-Value and standard features, such as including rough openings and electrical as standard, make Thermocore panels stand apart from the field in SIP technology and versatilty. 

Contact us today for a free, no-obligation quote to ensure your next project is like Thermocore SIPS; in a class of its own.