How Do I Insulate A Garage Roof

Similar to wearing a hat in the winter you need to make sure the top of the garage is protected to trap the heat in.

How do i insulate a garage roof.

There are two main types of insulation. And don t forget to take flooring into account. How to insulate a garage step by step. Some do it yourselfers commonly forget to leave air space between the fiberglass and the underside of the wood roof sheathing.

Last chance to waterproof your wall. Here s my step by step process for how i added insulation to my garage. 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. Box out light fixtures.

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. However if you have a cathedral style garage roof you will need a scaffolding to get into the upper areas of the roof. Water is insulation s enemy.

I do not have soffit vents but there is a ridge vent on the roof already installed. The task of insulating a garage roof is not hard to complete if you follow a few tips and hints. I wrote a tutorial on how to waterproof and seal your garage walls using drylok. The first thing you need to do is choose the type of insulation you are going to use.

You can insulate the walls ceiling and door of the garage to the highest r value possible but if you fail to fill those air gaps you ll still be wasting a lot of heat. So before insulating go around the garage with a can of low expanding spray foam and seal all gaps and cracks that let in the daylight. For example while an epoxy coating will add a protective layer to the floor it won t necessarily add insulating. Insulating the ceiling is the most important part of the garage because heat rises and escapes through the roof.

I do not want to drywall nor do i want to build a ceiling. It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow. As you see in the photos i have already insulated the walls with r15 batt installation. If you didn t do that before you put the frame up you can still do it now although it s going to be.

Step 1 choose the type of insulation. Here is a guide on how you can insulate the garage roof in a few easy steps.