However if you have a cathedral style garage roof you will need a scaffolding to get into the upper areas of the roof.
Garage roof ceiling insulation.
To get more insulation in the garage install a ceiling and provide access to the space between the ceiling and the roof.
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.
Insulating the ceiling of your garage involves the same process as insulating the walls.
This will allow you to add the needed insulation.
See the department of energy s doe ranges for recommended levels of insulation below.
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.
Use fibreglass cellulose foam board or closed cell spray foam if it were my garage i d go with spray foam.
This will help while you re up on the ladder.
Garage ceiling insulation is cheap accessible and easy to install.
Make sure you have enough ventilation on your roof as well.
Fiberglass is the most commonly used type of insulation in garages just as it s the most popular type in homes.
You can also get loose fill fiberglass which it suitable for blowing into a garage attic space above a finished ceiling.
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.
It s sold in pre cut batts and long blankets that fit between wall studs and ceiling joists.
Regulate your garage s temperature all year by installing insulation.
Measure the height and width between the framing in the ceiling and pre cut the pieces you ll need.
Project panels foamular 1 in.
Be sure to count the spaces above doors and windows.
There should be a continuous ridge and soffit ventilation.
Insulating the garage ceiling is a quick and simple way to warm up one of the coldest parts of your home.
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.
But if the garage is heated you should definitely insulate.
In either case you will need to follow the general steps below to insulate your garage roof.
Just remember to use thicker r 40 insulation.
Then cover it with drywall.