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Can Ultralight be used under heavy loads such as a car?

1 min read · Updated Apr 2025

Although it would depend on the total point load (aka ground pressure), the answer is no. Warmup’s Ultralight was designed to be used in foot-traffic applications only.

Heavy Load Details

Heavy loads or point loads greater than Warmup’s Ultralight Compressive Strength (10% Compression) of 32 psi (220 kPa) may cause a future failure. Warmup recommends a rigid foam that meets the specifications for heavy-point load applications.

ultralight single insulation board, not for use under heavy loads

More on Ultralight

Want to know more about Warmup’s Ultralight Insulation Boards? Read our Specification Sheet and Installation Manual.

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