Solve moisture and rot problems in insulated cathedral ceilings with closed cell foam ceiling insulation.
Insulating cathedral ceiling with foam board.
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.
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.
This is best for simple cathedral ceilings that are easy to ventilate.
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.
These should have straightforward framing with no skylights and with direct access to soffit and ridge vents.
In most cases however insulation will not help prevent moisture problems.
Rigid boards are manufactured from either.
Foil faced iso board can be cost effective insulation for finished attics and cathedral ceilings.
Attic trusses typically have a sloping ceiling.
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.
Insulating cathedral ceilings can be quite challenging.
Spray foam is a very expensive option however.
By the diy experts of the family handyman magazine the foam solution to ceiling moisture problems.