Vaulted Roof Insulation

In the knee wall area the insulation is in the floor and on the back of the knee wall.

Vaulted roof insulation.

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. 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. Nail 1 furring along every rafter side against the roof deck. Install baffles on vents.

Foil faced iso board can be cost effective insulation for finished attics and cathedral ceilings. That prevents all the old stuff from falling out. During hot summer months heat can build up beneath the roof deck reducing shingle life and. Flat roof cathedral ceiling we re going to give it a try.

In most cases however insulation will not help prevent moisture problems. Once this happens the water drips into your insulation or soaks into the roof sheathing. Foam board insulation would be a more economical especially if you are supplying the labor see photo. Seal all ceiling openings.

Solutions include pricier thinner batts with a higher insulating factor made especially for vaulted ceilings such as blown cellulose or more recently spray foam insulation an insulation that was specifically designed with hard to reach places in mind. 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. Spray foam is a very expensive option however.

The higher the r value the. 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. Existing is a fourteen year old roof with 2 of closed cell roofing foam with an acrylic elastomeric coating. Our plan is to put rigid board up between the 2x4 s caulk the edges and then hang sheetrock.

Below is 1x decking and 2x4 rafters. How to install fiberglass insulation in vaulted ceilings r value. These professional designer tips will help make tall vaulted cathedral and low ceilings blend into your room design.