Insulating A Cathedral Ceiling Spray Foam

Hi steve i very much appreciate the quick and detailed reply.

Insulating a cathedral ceiling spray foam.

I just had 3 inches of closed cell foam r21 installed on inside of my cathedral ceiling new const and was planning on adding r19 batt fiberglass over the spray foam. The higher r value reduces condensation when moist interior air hits the now less cold ceiling vice versa in summer with humid outside air. Closed cell foam ceiling insulation in a vaulted ceiling offers substantial advantages over open cell. My goal is simply to make it a.

I want to properly insulate my cathedral ceilings and was thinking to spray 2 inches of closed cell foam to sheathing then fill with dense packed cellulose. May 30 2020 at 9 57 am. Attic trusses typically have a sloping ceiling. First closed cell foam has a 60 percent higher r value per inch than open cell 6 3 vs.

Insulating cathedral ceilings can be quite challenging. High density urethane spray foam provides an airtight seal and high r values making it a good choice for unvented cathedral ceilings. Using foam it green spray foam insulation in your cathedral ceiling can give you much. Cathedral ceilings spray foam insulation.

I am wondering if i can attach craft paper and pine paneling to the 2x8 rafters and then fill the bays with cellulose. Insulating a cathedral ceiling with foam it green. Cathedral ceilings insulating with spray foam cathedral ceilings unvented how to seal. Check out the overhead project video to get some tips and techniques to make this project easier.

Treat your cathedral ceiling just like a wall with a different angle. 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. From my research i thought i needed at least an r40 of insulation in a cathedral ceiling in my zone. Foam it green spray foam bonds overhead.

The spray foam contractor says i m wasting my money since the closed cell foam is 97 efficient. However if you are determined to build an unvented roof then i think that closed cell foam insulation is a better choice. 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. Yes it s completely open from below with the rafters and roof sheathing all exposed see photo.