Settled fiberglass batts in older attics
Why it happens here
Fiberglass batts lose thickness over time, especially in attics that get hot in summer. In Pleasant Grove Grove, many homes still have the original batts from the 1970s and 1980s, which are now at half their rated R-value.
Our approach
We remove the old batts, air seal the attic floor, and blow in cellulose to R-49. Cellulose does not settle the way fiberglass does, so the R-value holds for decades.