Insulating A Cathedral Ceiling Spray Foam

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 spray foam.

Yes it s completely open from below with the rafters and roof sheathing all exposed see photo. First closed cell foam has a 60 percent higher r value per inch than open cell 6 3 vs. The higher r value reduces condensation when moist interior air hits the now less cold ceiling vice versa in summer with humid outside air. However if you are determined to build an unvented roof then i think that closed cell foam insulation is a better choice.

From my research i thought i needed at least an r40 of insulation in a cathedral ceiling in my zone. Cathedral ceilings spray foam insulation. A cathedral ceiling is often difficult to insulate as they leave very little room for ventilation which is needed to keep the insulation dry. 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 spray foam contractor says i m wasting my money since the closed cell foam is 97 efficient. 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. 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.

Attic trusses typically have a sloping ceiling. Treat your cathedral ceiling just like a wall with a different angle. Hi steve i very much appreciate the quick and detailed reply. 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.

Insulating cathedral ceilings can be quite challenging. My goal is simply to make it a. Insulating a cathedral ceiling with foam it green. Foam it green spray foam bonds overhead.

Using foam it green spray foam insulation in your cathedral ceiling can give you much. High density urethane spray foam provides an airtight seal and high r values making it a good choice for unvented cathedral ceilings. One of the best options would be spray foam insulation here s why. The new workshop will be located over my garage in an area that was framed using attic trusses when we built the new house.