Rim Joist Air Sealing in Farmington, CT

This homeowner was experiencing a significant amount of humidity in their basement. Our Building Science Expert evaluated the problem and found that using the 2-part expanding foam insulation on the rim joist and over the sill plate would be the perfect solution. This decreased the humidity in the basement and the homeowner saw immediate results.  In addition to there being less humidity, the overall air leakage to the house was reduced dramatically.