Spray Foam Insulation Case Studies: Sweating Ducts in Flint Hill, VA
Challenge
A homeowner in Flint Hill, VA had sweating ducts in their basement. Condensation forms when warm, humid air comes into contact with a colder surface like your air conditioner’s ductwork. In this case, air was coming in through the rim joist. The joints and gaps between all the framing members allow for a lot of air leakage into the house. The rim joist is seldom insulated and never air sealed.
Solution
To reduce the amount of hot air coming into the house, we insulated and air sealed the rim joist area with closed cell polyurethane spray foam. Dr. Energy Saver's spray foam has a high insulation value per inch of R7 and because it expands, it seals all cracks and gaps and joints where air from the outside enters your home. The results are less drafts, more comfortable rooms, and less summertime condensation.
Project Summary
Estimator: Corey Hatcher
