Faced Insulation Attic Floor

Insulation facing is a moisture or vapor barrier so it only makes sense to use faced insulation in your crawl space.

Faced insulation attic floor.

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. Insulation decreases the amount of heat entering from outside when it s hot and traps warmth inside when it s cold. Using cut 3 4 plywood. Roll insulation is best for floors ceilings and roofs with a long joist or rafter bays and for tall walls.

Mostly paper faced insulation is the best choice for neophytes in insulation installations. Faced insulation products not only use paper they can also use aluminum foil vinyl and even aluminum paper. Insulation is rated by its r value. Plan to pull up the flooring and layer new.

The batts are precut to fit into cavities on standard 8 foot high walls. Because the simplest and cheapest way to insulate an attic is to add material to the floor. Stop using your attic for storage. That s how the barrier is made effective.

I am remodeling a shower stall and going to re tile when i did the demo i noticed the insulation was faced insulation and the paper was facing the outside. All kraft faced insulation is easy to cut with a sharp utility knife or insulation knife. Without stapling moisture still has a path into the room. Install batting between the attic s floor joists.

When to use paper faced. It s also important that there be no air pockets in the insulation as this is where the cold spots spring up in rooms. If your attic floor has no insulation install faced batts or faced rolls between each joist with the moisture barrier facing down against the drywall or plaster ceiling below. R values vary based on the type thickness and density of the insulation material.

But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates. However when adding multiple layers of insulation you want to make sure that only one layer has faced and that the facing does not lie against the second insulation layer. It is important not to mix them nor use the wrong faced insulation product for each task. Faced insulation has flanges on the outside of the batt that need to be stapled to the wall studs and joists.

On the attic floor i wan to lay some flooring and a small walkway. If there is already insulation between the joists increase the r value by installing unfaced roll insulation right on top. Start with the attic floor. Kraft faced or paper faced insulation comes in batts and long rolls.

If the attic doesn t have any existing insulation use faced insulation with the paper facing toward the heated living space. I live in the sacramento valley area which gets very hot and dry in the summer doesn t get to cold in winter but foggy damp days in the 30 3 and 40 s. Can i place unfaced batting and then place a small walkway.