Faced Insulation Attic Floor

If there is already insulation between the joists increase the r value by installing unfaced roll insulation right on top.

Faced insulation attic floor.

On the attic floor i wan to lay some flooring and a small walkway. 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. The batts are precut to fit into cavities on standard 8 foot high walls. Insulation facing is a moisture or vapor barrier so it only makes sense to use faced insulation in your crawl space.

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. Stop using your attic for storage. Can i place unfaced batting and then place a small walkway. 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.

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. If the attic doesn t have any existing insulation use faced insulation with the paper facing toward the heated living space. It s also important that there be no air pockets in the insulation as this is where the cold spots spring up in rooms. R values vary based on the type thickness and density of the insulation material.

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. When to use paper faced. Kraft faced or paper faced insulation comes in batts and long rolls. Insulation is rated by its r value.

Roll insulation is best for floors ceilings and roofs with a long joist or rafter bays and for tall walls. Plan to pull up the flooring and layer new. 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.

Dave december 1 2018 at 11 57 am. The shower has two outside walls. It is important not to mix them nor use the wrong faced insulation product for each task. Because the simplest and cheapest way to insulate an attic is to add material to the floor.

That s how the barrier is made effective. Start with the attic floor. R value measures how resistant types of insulation are to heat flow. 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.

Using cut 3 4 plywood. Without stapling moisture still has a path into the room. All kraft faced insulation is easy to cut with a sharp utility knife or insulation knife.