Settled fiberglass in older attics
Why it happens here
Fiberglass batts settle over time, especially in attics that get hot in summer. After 20 or 30 years, they can lose half their thickness, which means half their R-value. Homes in Gardens North are especially prone to this.
Our approach
We measure the actual depth and calculate the R-value. If it's below code, we blow in cellulose on top of the existing batts to bring it up to R-49. It's faster and cheaper than a full removal in most cases.