How To Install Insulation In Garage Roof

I wrote a tutorial on how to waterproof and seal your garage walls using drylok.

How to install insulation in garage roof. Adding insulation to your garage ceiling is important for trapping the heat in the home and minimizing heat loss through your garage. Here s my step by step process for how i added insulation to my garage. You can buy insulation kits for standard metal garage doors or you can cut pieces of rigid foam insulation to fit each door panel section. In either case you will need to follow the general steps below to insulate your garage roof.

You should use some foil tape to make sure that the insulation is stable on the roof edges. However if you have a cathedral style garage roof you will need a scaffolding to get into the upper areas of the roof. This will determine how many packages of insulation you need. Stand on the rafters of the garage to access the roof joists that run up the inside of the roof.

During installation avoid the following mistakes as they can be costly or dangerous down the road. Step 2 roll out your batt insulation. To install the insulation overhead you need to staple the pieces to the roof trusses. Put a piece of wood on top of the insulation to use as a guide to cut the insulation to the right size.

Measure the length of each side from the peak of the inside of the roof down to the tops of the walls. Last chance to waterproof your wall. Make sure that all of the pieces are the same size so that they fit into the trusses. Keep in mind that the structural metal ribbing of garage doors is an excellent conductor of heat and this typically doesn t get insulated.

Tuck the insulation in to make it easier to staple. Install as directed typically cutting to fit and using a staple gun to attach the vapor barrier to the studs. Staple the insulation all the way down the side of the stud. Use a utility knife to cut excess insulation so it fits the size of the stud.

If you didn t do that before you put the frame up you can still do it now although it s going to be. If you have a flat garage roof and an attic above you can install the garage insulation from below using a standard ladder. You can easily install several sheets of the insulation in only a few minutes without worrying about the security. Don t insulate your garage walls and ceiling without insulating the big garage door too.

Take your square footage figure and divide it by the square footage that each roll or package of insulation will cover.