How To Install Insulation Board In Attic

There are various grades of insulating batting for different locations in the house so you ll need a different insulation for interior exterior attic or basement walls.

How to install insulation board in attic. Choose your insulation type. The r value of the batt measures the thermal resistance so the higher the r value the more effectively. Keep foam board insulation away from direct sunlight prior to installation. 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.

Choose fiberglass insulation batting. Because the simplest and cheapest way to insulate an attic is to add material to the floor. I am going to put a four foot runway of boards down. Home insulating tips for attics how do i know if i need more insulation in my attic.

Remove the old insulation boards carefully without causing any damage to the walls. It will degrade its r value. Before installing determine the insulation material best suited for your home. 2 snap a chalk line between the length measurements.

Cover the insulation with a vapor barrier before you install it. So if you re installing insulation in an attic that doesn t have any used faced insulation and put the paper side down toward the ceiling. The best way to install foam board insulation under drywall is to frame the wall with 2x3 inch lumber for the top and bottom plates and 2x2 inch lumber for the studs. When installing the foam use caulk or tape for maximum insulation between the material and the board or floor.

Cutting foam board insulation a popular option is to use a fine toothed hand saw. Remove any existing pieces of insulation that might have been covering the attic walls until now. Plan to pull up the flooring and layer new insulation on top of the old. Check pipes and vents.

Cut your foam insulation panels to fit between the furring strips. All foam boards absorb water vapor. Calculate how much you need. Step 2 install insulation boards.

Foam insulation boards can be attached to concrete walls as well and in such a case care should be taken not to chip the cement. The grade of batting will vary depending on the wall that you re insulating.