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.
Rigid foam board insulation attic floor.
It will degrade its r value.
Keep foam board insulation away from direct sunlight prior to installation.
It comes in standard size 4 8 sheets and smaller sizes in many different thicknesses from 1 4 inch to 2 inches.
Most people do not think about insulating their floors unless perhaps it s their attic floor.
Some types of thicker foam board insulation are available but they may need to be special ordered.
Foam board insulation is used on attics and walls yet it can also be used to insulate your floors.
When installing the foam use caulk or tape for maximum insulation between the material and the board or floor.
All foam boards absorb water vapor.
Cover the insulation with a vapor barrier before you install it.
But insulating your floors is a good idea for many reasons including energy efficiency and height adjustments.
Foam board insulation is easy to use and is a great diy way to add some insulation.
When installing foam insulation boards in the attic make sure you start from one corner and work your way around the room.
The superattic system creates a continuous air and insulation barrier directly beneath the attic roof with no thermal bridging to compromise energy performance.