Get the most energy efficiency from your insulation by filling all gaps, avoiding compression, sealing holes in framing and ...
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What Is Mineral Wool Insulation?

Mineral wool batts for 2×6 walls have an R-value of 23, compared with R-19 for fiberglass batts. A 2×4 stud cavity filled with blown-in cellulose has an R-value of about 13. Spray foam insulates ...