Open Cell Off-Gassing – Contractor Wants to Remove and Spray Closed Cell Over

Hello! I had a contractor spray our attic on 2/3/23. They used closed-cell and open-cell foam in our attic. The open cell was used behind knee walls in our attic… Hello! I had a contractor spray our attic on 2/3/23. They used closed-cell and open-cell foam in our attic. The open cell was used behind knee walls in our attic…Read MoreGreenBuildingAdvisor