Go Green…a Rooftop Blog

See what’s new in green roofing
and insulation

Monthly Archives: November 2017

Foam Insulation and R-Value — A False Measurement

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 R-value is an out-of-date calculation originally meant to rate the efficiency of insulation products and was adopted by the Federal Trade Commission (FTC) to protect consumers against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…