Do I Need Faced Insulation Between Floors

The main reason why you do not need insulation on the floors is simple.

Do i need faced insulation between floors.

Any time you use a faced insulation the paper needs to be facing toward the living space. So in an attic the paper faces downward and in a crawl space it faces upward. Sticking your vapor barriers and thermal resistance into places besides the exterior building shell can create odd interior dynamics. The batting material must be faced and at least as thick as the joists are wide so the batting is nearly flush with the top of the joists.

Floor insulation can sometimes reduce the room temperature below the dew point. Unless you have an extra 10 000 and a big hearted desire to create jobs in the insulation industry it makes no sense to insulate between floors. The biggest concern that can happen due to floor insulation is mould. The floor does not belong in the building envelope.

Sometimes adding insulation to the floor can cause problems for your home. Faced or the type with paper is typically used in first time applications such as in walls ceilings floors and in crawl spaces. Install batting between the attic s floor joists.