SPFA SPF Installer Practice Questions - SPFA Spray Polyurethane Foam (SPF) Installer Certification Exam

Approximately what R-value per inch does closed-cell SPF typically provide?

R-2.0 per inch R-3.6 per inch About R-6 to R-7 per inch R-10 per inch

Correct Answer:

About R-6 to R-7 per inch

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