Garage Roof Insulation Boards

This foam board insulation is available with straight or tongue and groove edges to help limit air movement.

Garage roof insulation boards.

R matte rmax r matte plus 3 1 2 in. Garage door insulation kit pricing under 50. Keep in mind that the structural metal ribbing of garage doors is an excellent conductor of heat and this typically doesn t get insulated. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses.

However if you have a cathedral style garage roof you will need a scaffolding to get into the upper areas of the roof. These insulations typically look like a metallic roll of wrapping paper or like tin foil. Don t insulate your garage walls and ceiling without insulating the big garage door too. This will prevent condensation forming in the roof.

Sebring estimates it costs about 50 cents to 1 25 per square foot to insulate a garage. This means insulating a two car garage would cost about 338 845. In either case you will need to follow the general steps below to insulate your garage roof. For a cold roof where the insulation such as kooltherm k7 pitched roof board is fixed between the roof joists the roof needs to be ventilated by leaving a 50 mm gap above the insulation to create an air gap which is vented to the outside.

R 3 2 polyisocyanurate rigid foam insulation board. If you have a flat garage roof and an attic above you can install the garage insulation from below using a standard ladder. Garage door insulation kits start at under 50. 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.

It is denser than eps and provides more r value with a rating of 5 per inch of thickness.