Cathedral Ceiling Spray Foam Insulation In Doon, Ontario

A Vaulted Ceiling Has No Attic Above It

A cathedral ceiling follows the slope of the roof, so there is no attic to fill with deep material. All the R-value has to live inside the rafter bay, which is often only eight to ten inches deep.

Batts in that bay rarely fill it, and gaps around pot lights and beams let warm air climb to the roof boards. In winter, that air can leave frost and brown stains on the ceiling. Cathedral ceiling spray foam insulation fills the bay and seals it.

Closed Cell Foam Does Two Jobs At Once

Each inch of closed cell foam is worth close to R-6 or R-7, more than any other common insulation, so it is our pick for cathedral ceiling spray foam insulation. Applied to the back of the roof sheathing, one layer stops air, holds heat and keeps vapour off the wood. In most designs that removes the need for a vent channel above the insulation.

When The Work Can Be Done

Cathedral ceiling spray foam insulation goes in most easily while the ceiling is open. That happens during a new build, an addition, a gut renovation or a reroof where the sheathing is exposed. We can also work from inside when the drywall is coming down anyway.

If a great room or loft renovation is coming up, call us before the new drywall goes on.

Great Rooms And Lofts In South Kitchener

For cathedral ceiling spray foam insulation, newer homes in Doon South and Huron Park are a common setting. They often feature a two-story great room or a vaulted main bedroom. These rooms are bright and open, but they can be hard to heat. Sealing the ceiling is the single biggest step toward fixing that.

Cost Of Cathedral Ceiling Insulation

Closed cell foam on roof sheathing in Ontario generally costs $3.50 to $7 per square foot. If drywall has to come down and go back up, that is included on the quote.