How To Install Rigid Foam Insulation In Attic Rafters

Alternate fasteners may be used with the type and length as recommended by their manufacturer for securing foam plastic insulating sheathing.

How to install rigid foam insulation in attic rafters.

Class i e 84 fire retardant meets building code spec. Affix rigid foam insulation to the attic side of the hatch or door. You can use a utility knife to cut using the same cut and snap process you use with drywall. Foam board insulation in the attic can cut down on energy costs and simultaneously promote a more environmentally sound way of daily living.

How do you install rigid foam board. Installing foam insulation boards in the attic is no that hard and can save you money compared with professional installation. Fasten foam insulation boards to the interior of the rafters using screws or nails with 1 inch minimum washers or caps. Measure the space between rafters and cut the board to fit.

Add weatherstripping around the perimeter and a sweep to the door of a walk up attic. Foam insulation boards are the best material with which to work when undertaking a do it yourself project because foam. Use a chalk line or t square to mark where it needs to be cut. Measure the length and width between two rafters in your attic and transfer the measurements to a 4 ft by 8 ft of rigid foam insulation board.

For the foam to boards prefer screws through a specialty plastic washer that holds it tight attach through side for first one closest to roof for foam on foam they make a special one piece plastic push in one that works great for the final layer over the rafters a long enough screw similar washer used in the first one. Use closed cell foam it green for attic rafters. The best attic insulation. Firstly you can apply it directly onto the house s concrete walls with the help of a construction adhesive that will hold it in place.

Installing rigid foam insulation there s two ways you can go about with foam board insulation. Cut the foam board on the outside edge of the. A table saw will also cut the board but it. R value of 7 in 1 inch 97 closed cell foam.

Fasteners should be long enough to penetrate in to the rafter a minimum of inch. 100 free of cfcs vocs penta bdes urea formaldehyde. Spray foam insulation that s convenient and easy to use. Snap a chalk line between the length measurements for use as a cutting guide.