Installing Manville Faced Fiberglass Batt Insulation Attic Floor

Framing attics and ceilings.

Installing manville faced fiberglass batt insulation attic floor.

Lengths for easy installation in 24 in. The shower has two outside walls. Just buy un faced batts install them to grade 1 and build your air and moisture control systems in another layer big separate discussion. Roll insulation is best for floors ceilings and roofs with a long joist or rafter bays and for tall walls.

Owens corning r 30c ecotouch pink cathedral ceiling kraft faced fiberglass insulation batt 15 1 2 in. And that s what s going on when you attempt to hang faced fiberglass. Faced insulation has flanges on the outside of the batt that need to be stapled to the wall studs and joists. Use a sharp utility knife.

So i am not sure which way to install the new 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. R 49 kraft faced batts come in pre cut 48 in. Johns manville r 21 kraft faced fiberglass insulation batt 15 in.

If there is already insulation between the joists increase the r value by installing unfaced roll insulation right on top. R 49 kraft faced insulation is formaldehyde free fiberglass insulation protected on one side with moisture resistant kraft facing. 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.

10 bags model k1263. Johns manville r 13 106 56 sq ft faced fiberglass batt insulation 15 in w x 93 in l owens corning r 13 40 sq ft single faced fiberglass roll insulation 15 in w x 32 ft l dow restartable straw gaps and cracks 12 oz spray foam insulation. Kraft faced or paper faced insulation comes in batts and long rolls. The batts are precut to fit into cavities on standard 8 foot high walls.

Install batting between the attic s floor joists. The damn facing obscures your work slowing down the installation and resulting in a poor insulation grade. 1 bag covers 48 sq. Don t double it over or compress it.

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. Buy 15 or more 52 63. Fsk 25 flame resistant faced insulation. That s how the barrier is made effective.

On center 2 in. View the owens corning 2x6 wall floor insulation 75 19 75 19. If you are using unfaced batts place the insulation into the cavity making sure that it is the correct size and fits snugly at the sides and ends and does not protrude in the back. If the insulation is too long cut it to fit properly.