Garage Roof Ceiling Insulation

Fiberglass is the most commonly used type of insulation in garages just as it s the most popular type in homes.

Garage roof ceiling insulation.

Insulating the garage ceiling is a quick and simple way to warm up one of the coldest parts of your home. However if you have a cathedral style garage roof you will need a scaffolding to get into the upper areas of the roof. In either case you will need to follow the general steps below to insulate your garage roof. If you are insulating the garage ceiling not only by the truss level but also up by the roofline then you must leave at least 1 1 2 to two inches of air between the fiberglass and the underside.

This will allow you to add the needed insulation. There should be a continuous ridge and soffit ventilation. Then cover it with drywall. You can also get loose fill fiberglass which it suitable for blowing into a garage attic space above a finished ceiling.

Regulate your garage s temperature all year by installing insulation. To prepare determine the area of the space you plan to insulate and add 10 to 20 percent to account for mistakes and odd spaces you need to fill. Make sure you have enough ventilation on your roof as well. Insulating the ceiling of your garage involves the same process as insulating the walls.

Project panels foamular 1 in. Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces. This will help while you re up on the ladder. If the garage is open to the rafters the boards that support the roof use r 38 insulation between the rafters at the roof if they are 10 inches deep.

Use fibreglass cellulose foam board or closed cell spray foam if it were my garage i d go with spray foam. See the department of energy s doe ranges for recommended levels of insulation below. But if the garage is heated you should definitely insulate. This will make the garage space more appealing to work in and it will allow you to store a greater variety of items that may currently be cluttering up your house.

Just remember to use thicker r 40 insulation. It s sold in pre cut batts and long blankets that fit between wall studs and ceiling joists. Be sure to count the spaces above doors and windows. To get more insulation in the garage install a ceiling and provide access to the space between the ceiling and the roof.

If you have a flat garage roof and an attic above you can install the garage insulation from below using a standard ladder.