Insulating Cathedral Ceiling With Foam Board

Foam board insulation would be a more economical especially if you are supplying the labor see photo.

Insulating cathedral ceiling with foam board.

Insulating cathedral ceilings can be quite challenging. These should have straightforward framing with no skylights and with direct access to soffit and ridge vents. 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.

Attic trusses typically have a sloping ceiling. The new workshop will be located over my garage in an area that was framed using attic trusses when we built the new house. Rigid boards are manufactured from either. If you decided to use a rigid foam board to help insulate your cathedral ceiling you would install the board on top of the roof sheathing and underneath the plywood at the top of the roof.

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. Solve moisture and rot problems in insulated cathedral ceilings with closed cell foam ceiling insulation. Spray foam is a very expensive option however. It fills and seals the space and doesn t absorb moisture.

A less expensive alternative is the more traditional vented cathedral ceiling insulated with fiberglass cellulose or open cell foam. In most cases however insulation will not help prevent moisture problems.