Insulate Roof With No Attic Space

It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow.

Insulate roof with no attic space.

Fill the remaining space with fiberglass or cellulose. Effects of insulating the garage attic. With 2x6 rafters this will give about an r 19 roof higher if you use thicker solid foam insulation. This gives the best air path eaves to ridge but costs more for the labor to nail furring and cut insulation into pieces to fit between rafters.

If you do not use the attic much it is pointless heating this area. You may also insulate your roof to help regulate the temperature in an attic that is a part of your living space. Insulating the roof is a priority if the ceilings of your home happen to be part of the roof deck as is the case with cathedral ceilings. Look for water stains on the roof sheathing or damp or moldy spots on attic joists and existing insulation as a clue to where leaks might be.

For such constructions the principles and benefits of unvented attic construction are similar to that occurring in a single family residence. Works well costs more. But spray foam insulation used at the underside of the roof deck would need to be covered by a thermal barrier and intumescent coatings are commonly used. Since your home s heating and cooling system usually does not extend into the garage insulating this area does little to change the cost of running the system.

Box out light fixtures. Insulating the attic floor. So insulating the floor of the attic is not only the best solution but it is also the simplest and cheapest. Materials commonly used for the insulation of the roof deck include.

In practical terms you can choose between mineral wool or insulation boards. By laurie brenner homes with flat roofs require a different approach to insulation than the standard approach used for homes with pitched roofs. An attic you want vented but in your case you want the ceiling roof space sealed. The general answer to the question of whether insulating a garage attic will lower energy costs is no at least not appreciably.