Insulating Cathedral Ceiling With Foam Board

This is best for simple cathedral ceilings that are easy to ventilate.

Insulating cathedral ceiling with foam board.

In most cases however insulation will not help prevent moisture problems. Foam board insulation would be a more economical especially if you are supplying the labor see photo. 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 foam board installation in the case of a cathedral ceiling involves installing three different layers that are each 1 5 inches thick according to the procedure discussed in this article appearing in fine homebuilding.

These should have straightforward framing with no skylights and with direct access to soffit and ridge vents. Solve moisture and rot problems in insulated cathedral ceilings with closed cell foam ceiling insulation. Foil faced iso board can be cost effective insulation for finished attics and cathedral ceilings. Attic trusses typically have a sloping ceiling.

It fills and seals the space and doesn t absorb moisture. The new workshop will be located over my garage in an area that was framed using attic trusses when we built the new house. By the diy experts of the family handyman magazine the foam solution to ceiling moisture problems. Insulating cathedral ceilings can be quite challenging.

A less expensive alternative is the more traditional vented cathedral ceiling insulated with fiberglass cellulose or open cell foam. 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.