Unfaced crawl space insulation.
Floor joist insulation faced or unfaced.
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.
The insulation should extend all the way down to the basement floor or at least to below the frost line the depth to which the ground freezes in winter.
It s also important that there be no air pockets in the insulation as this is where the cold spots spring up in rooms.
The same applies to faced unfaced and other kinds of insulation products.
For example if you plan on using your garage for your welding projects you run the risk of having a welding fire.
How to install insulation.
You may be required to cover the kraft paper with other materials depending on your local codes.
That s how the barrier is made effective.
Staple the flange to the side of the framing member with staples spaced about 12.
Faced insulation is a familiar type of insulation that often comes in rolls or batts and gets stapled to joists or other beams.
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.
Any time you use a faced insulation the paper needs to be facing toward the living space.
Here s when to use faced or unfaced insulation.
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.
Whether you choose faced or unfaced insulation for the attic depends on the application and whether some insulation already is present.
Tuck between joists above the basement or crawlspace.
Unfaced insulation in your garage.
If you do use faced insulation you must take extra precautions to avoid having a fire.
Run the unfaced strips perpendicular to the.
Install batting between the attic s floor joists.
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.
The facing on faced insulation acts as a vapor retarder.
Faced insulation has flanges on the outside of the batt that need to be stapled to the wall studs and joists.
If there is already insulation between the joists increase the r value by installing unfaced roll insulation right on top.
Faced or the type with paper is typically used in first time applications such as in walls ceilings floors and in crawl spaces.
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.
