Floor Joist Insulation Faced Or Unfaced

Install batting between the attic s floor joists.

Floor joist insulation faced or unfaced.

Faced insulation has flanges on the outside of the batt that need to be stapled to the wall studs and joists. Whether you choose faced or unfaced insulation for the attic depends on the application and whether some insulation already is present. Here s when to use faced or unfaced insulation. If you need a vapor barrier and your insulation is unfaced you must cover it with a polyethylene film.

Without stapling moisture still has a path into the room. Run the unfaced strips perpendicular to the. It s also important that there be no air pockets in the insulation as this is where the cold spots spring up in rooms. How to install insulation.

The same applies to faced unfaced and other kinds of insulation products. That s how the barrier is made effective. If you do use faced insulation you must take extra precautions to avoid having a fire. It wasn t all of the floor joists it was just the bottom of the floor joists that was exposed allowing the aired to get to the moisture and drying it and then causing it to dry rot.

Position the flange flat against the side face of the wall stud or floor joist or roof rafter so the edge of the flange is flush with the interior edge of the stud joist or rafter. 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. Experts refer to insulation as faced or unfaced basically faced insulation has a vapor barrier and unfaced insulation does not. When insulating basement walls don t forget the band joist the piece of wood at the top of the wall that extends around the perimeter and encloses the ends of the floor joists.

Staple the flange to the side of the framing member with staples spaced about 12. The facing on faced insulation acts as a vapor retarder. You may be required to cover the kraft paper with other materials depending on your local codes. Faced or the type with paper is typically used in first time applications such as in walls ceilings floors and in crawl spaces.

Faced insulation is a familiar type of insulation that often comes in rolls or batts and gets stapled to joists or other beams. Kathy november 26 2017 at 11 00 am. Any time you use a faced insulation the paper needs to be facing toward the living space. Insulation in rolls called batts comes in two varieties.

Unfaced insulation in your garage. For example if you plan on using your garage for your welding projects you run the risk of having a welding fire. Tuck between joists above the basement or crawlspace.