Insulating An Attic With Foam Board

Attic hatch or door.

Insulating an attic with foam board. Rigid insulation is one of the best tools to reduce your energy costs. Often the r value of fiberglass insulation is too low and requires the rafters to be retrofitted making foam board a better choice. Shop at lowe s to find the foam sheeting you need for your next insulation project. Foam board insulation in the attic can cut down on energy costs and simultaneously promote a more environmentally sound way of daily living.

Typically sold as sheet insulation in a standard size of 4 x 8 foam insulation panels can help reduce energy costs get a handle on moisture control and more. Affix rigid foam insulation to the attic side of the hatch or door. You can use foam board in the attic. Rigid foam insulation also known as insulating boards provide high r values.

Spray foam is a very expensive option however. Foam board insulation is easy to cut with a circular saw with a masonry blade or scored with a utility knife and snapped like you would drywall. To attach the insulation you can use screws with large washers a special adhesive made for adhering foam board insulation or for smaller pieces you can seal them in with caulk or spray foam. Foam board insulation would be a more economical especially if you are supplying the labor see photo.

Foam insulation board also comes with a foil backing and when the foil is just on one side of the board you have a decision to make regarding its orientation. The superattic system creates a continuous air and insulation barrier directly beneath the attic roof with no thermal bridging to compromise energy performance. It is an excellent installation option for the attic because it is lightweight easy to work with and offers high r values. The superattic system utilizes proprietary silverglo rigid foam insulation panels to fully seal and insulate the attic directly beneath the roof rafters and directly inside the gable ends.

Add weatherstripping around the perimeter and a sweep to the door of a walk up attic. Installing foam insulation boards in the attic is no that hard and can save you money compared with professional installation. Foil faced iso board can be cost effective insulation for finished attics and cathedral ceilings.