Insulating Cathedral Ceiling With Foam Board

Insulating cathedral ceilings can be quite challenging.

Insulating cathedral ceiling with foam board.

Foil faced iso board can be cost effective insulation for finished attics and cathedral ceilings. Solve moisture and rot problems in insulated cathedral ceilings with closed cell foam ceiling insulation. Foam board insulation would be a more economical especially if you are supplying the labor see photo. In most cases however insulation will not help prevent moisture problems.

Attic trusses typically have a sloping ceiling. A less expensive alternative is the more traditional vented cathedral ceiling insulated with fiberglass cellulose or open cell foam. This is best for simple cathedral ceilings that are easy to ventilate. The new workshop will be located over my garage in an area that was framed using attic trusses when we built the new house.

Spray foam is a very expensive option however. By the diy experts of the family handyman magazine the foam solution to ceiling moisture problems. Regular ceilings are likely to be under attics with either batt insulation between the joist bays or in some cases rigid insulation between the rafters. I m in the early stages of building an amazing workshop to showcase tools over at tool box buzz and shop projects here at hci.

Rigid boards are manufactured from either. These should have straightforward framing with no skylights and with direct access to soffit and ridge vents.