Vaulted Roof Insulation

Foil faced iso board can be cost effective insulation for finished attics and cathedral ceilings.

Vaulted roof insulation.

Our plan is to put rigid board up between the 2x4 s caulk the edges and then hang sheetrock. Flat roof cathedral ceiling we re going to give it a try. Existing is a fourteen year old roof with 2 of closed cell roofing foam with an acrylic elastomeric coating. Seal all ceiling openings.

Insulation receives a rating based on its ability to reduce thermal transfer. 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. Foam board insulation would be a more economical especially if you are supplying the labor see photo. Spray foam is a very expensive option however.

Continue installing baffles until baffles are. Nail 1 furring along every rafter side against the roof deck. 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. That prevents all the old stuff from falling out.

The higher the r value the. Below is 1x decking and 2x4 rafters. How to install fiberglass insulation in vaulted ceilings r value. Stand on a ladder and using a caulk gun seal any areas where there is visible wiring or.

Install baffles on vents. Once this happens the water drips into your insulation or soaks into the roof sheathing. In the knee wall area the insulation is in the floor and on the back of the knee wall. During hot summer months heat can build up beneath the roof deck reducing shingle life and.

Also called vent chutes the baffles will make sure there is enough air flowing for. 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. Cathedral ceilings built using 2 x 12 roof rafters allow enough space for the fiberglass batt insulation and a 1 5 gap for ventilation.