However if you are determined to build an unvented roof then i think that closed cell foam insulation is a better choice.
Spray foam insulation vaulted ceiling.
Spray foam is a very expensive option however.
The higher r value reduces condensation when moist interior air hits the now less cold ceiling vice versa in summer with humid outside air.
There is a major difference in spray foam insulation and sealing with spray foam insulation.
In most cases however insulation will not help prevent moisture.
What is going on with vaulted ceiling.
Closed cell foam ceiling insulation in a vaulted ceiling offers substantial advantages over open cell.
It does not look sealed to the outside at the ridge.
Foil faced iso board can be cost effective insulation for finished attics and cathedral ceilings.
Cathedral ceilings spray foam insulation.
Treat your cathedral ceiling just like a wall with a different angle.
Foam it green spray foam bonds overhead.
Foam board insulation would be a more economical especially if you are supplying the labor see photo.
First closed cell foam has a 60 percent higher r value per inch than open cell 6 3 vs.
One of the best options would be spray foam insulation here s why.
While fiberglass insulation is an excellent and effective product for insulating most building cavities in areas where there is extra risk of trapping moisture and thus rot or mold infections such as crawl spaces and cathedral ceilings where roof venting may be absent or minimal we prefer to use closed cell foam insulation products or spray.
Insulating a cathedral ceiling with foam it green.
A cathedral ceiling is often difficult to insulate as they leave very little room for ventilation which is needed to keep the insulation dry.
Using foam it green spray foam insulation in your cathedral ceiling can give you much.
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.