Cover the insulation with a vapor barrier before you install it.
Rigid foam board insulation attic floor.
It will degrade its r value.
Most people do not think about insulating their floors unless perhaps it s their attic floor.
Foam board insulation is used on attics and walls yet it can also be used to insulate your floors.
It s made of environmentally sound closed cell polyisocyanurate foam bonded to a durable white matte non glare aluminum facer and a reflective reinforced aluminum facer.
R matte plus 3 thermasheath 3 is rigid foam plastic thermal insulation r matte plus 3 thermasheath 3 is rigid foam plastic thermal insulation board.
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.
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.
But insulating your floors is a good idea for many reasons including energy efficiency and height adjustments.
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.
All foam boards absorb water vapor.
Some types of thicker foam board insulation are available but they may need to be special ordered.
Keep foam board insulation away from direct sunlight prior to installation.