Insulating A Cathedral Ceiling 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.

Insulating a cathedral ceiling spray foam.

Foam it green spray foam bonds overhead. Cathedral ceilings insulating with spray foam cathedral ceilings unvented how to seal. 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.

However if you are determined to build an unvented roof then i think that closed cell foam insulation is a better choice. The new workshop will be located over my garage in an area that was framed using attic trusses when we built the new house. May 30 2020 at 9 57 am. 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. Closed cell foam ceiling insulation in a vaulted ceiling offers substantial advantages over open cell. 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. Treat your cathedral ceiling just like a wall with a different angle.

Hi steve i very much appreciate the quick and detailed reply. From my research i thought i needed at least an r40 of insulation in a cathedral ceiling in my zone. My goal is simply to make it a. Insulating cathedral ceilings can be quite challenging.

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. I am wondering if i can attach craft paper and pine paneling to the 2x8 rafters and then fill the bays with cellulose. 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.

One of the best options would be spray foam insulation here s why. The spray foam contractor says i m wasting my money since the closed cell foam is 97 efficient. First closed cell foam has a 60 percent higher r value per inch than open cell 6 3 vs. Yes it s completely open from below with the rafters and roof sheathing all exposed see photo.