Foam Board Insulation Vaulted Ceiling

We go in depth on why.

Foam board insulation vaulted ceiling. Closed cell foam ceiling insulation in a vaulted ceiling offers substantial advantages over open cell. Working with home insulation boards insulation panels typically come in 4x8 foot sheets. The higher r value reduces condensation when moist interior air hits the now less cold ceiling vice versa in summer with humid outside air and a c inside. Vent channel separated from the insulation by a foam cardboard or plywood baffle and provide balanced venting at eaves and ridge.

For new construction use rigid boards to insulate slabs and the outside of foundation walls. Fiberglass insulation comes in lightweight batts and rolls precut to widths that match standard stud and rafter spacing. In most of the country you need to install a minimum of r 38 or r 49 insulation. R 30 ceiling insulation is less than the minimum code requirement for ceilings in all u s.

The slope of the ceiling is about 45 degrees. There are no locations in the u s. Will the foam board be effective if it is cut tight to the rafter width and layed on top of the drywall. The cathedral ceiling space in question between the top of the kneewall and the flat 2nd floor bedroom ceiling is only about 4 feet.

Thanks for your suggestions. Insulating a vaulted ceiling is similar to insulating exterior walls with. Minimize penetrations to the ceiling and especially avoid recessed ceiling lights which have been the cause of numerous moisture problems in cathedral ceilings with or without vent channels. Install them using panel adhesive or screws.

If you re concerned about how you should be insulating cathedral ceilings icynene spray foam insulation is the ideal choice since it can aid in early detection of situations such as roof leaks and wind driven moisture intrusion icynene spray foam ca be applied to insulate any space or unique angle. Find ceiling foam board insulation at lowe s today. In this edition of inside lighthouse we discuss why vaulted ceilings are the perfect application for closed cell spray foam insulation. Spray foam is a very expensive option however.

They re much lighter and easier to work with than plywood sheets. Above the insulation leave a 1 1 2 in. 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.

Smaller sizes are also available. Locations except the southern tip of florida and hawaii.