Vaulted Roof Insulation

Below is 1x decking and 2x4 rafters.

Vaulted roof insulation.

Cathedral ceilings built using 2 x 12 roof rafters allow enough space for the fiberglass batt insulation and a 1 5 gap for ventilation. During hot summer months heat can build up beneath the roof deck reducing shingle life and. Once this happens the water drips into your insulation or soaks into the roof sheathing. When you can t do much about the roof one of the easiest and quickest ways to beef up the insulation on a ceiling like this is to add 1 to 2 inches of ridged foam insulation right over the drywall and then add more drywall.

Install baffles on vents. Also called vent chutes the baffles will make sure there is enough air flowing for. Continue installing baffles until baffles are. The higher the r value the.

These professional designer tips will help make tall vaulted cathedral and low ceilings blend into your room design. In most cases however insulation will not help prevent moisture problems. Once it gets into the attic space or the space between the roof and the ceiling of a cathedral ceiling the air cools rapidly and the water held in the air condenses on to a near by cold surface usually the underside of the roof or the roofing nails. Insulation receives a rating based on its ability to reduce thermal transfer.

Stand on a ladder and using a caulk gun seal any areas where there is visible wiring or. How to install fiberglass insulation in vaulted ceilings r value. Spray foam is a very expensive option however. Foam board insulation would be a more economical especially if you are supplying the labor see photo.

That prevents all the old stuff from falling out. Cut and insert 1 or thicker high r foam insulation sheets r 8 per inch against the furring giving a 1 or greater air path between the insulation and the roof deck under the cathedral ceiling. Nail 1 furring along every rafter side against the roof deck. Existing is a fourteen year old roof with 2 of closed cell roofing foam with an acrylic elastomeric coating.

In the knee wall area the insulation is in the floor and on the back of the knee wall. Seal all ceiling openings. Our plan is to put rigid board up between the 2x4 s caulk the edges and then hang sheetrock.