Foam Insulation and R-Value — A False Measurement

A man in a white T shirt applies spray foam to a commercial roof. Spray foam also is used for building insulation, providing superior R value compared to traditional insulation.

When asked to insulate commercial buildings, we often recommend SPF (spray polyurethane foam) insulation. R-value, the commercial rating for insulation, isn’t the reason. R-value is an out-of-date calculation originally meant to rate the efficiency of insulation products and was adopted by the Federal Trade Commission (FTC) to protect consumers against false sales claims. Foam Insulation…

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