Installing Manville Faced Fiberglass Batt Attic Floor

Wherever insulation is installed in a building it is very important that it fits snugly on all sides.

Installing manville faced fiberglass batt attic floor.

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. Cut the insulation roll or batt to fit the length of the framing cavity if necessary. If it is too short cut a piece to fill the void. 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.

Owens corning r 30c ecotouch pink cathedral ceiling kraft faced fiberglass insulation batt 15 1 2 in. Set a t square or metal straightedge over the insulation and press it down firmly. Any moisture vapor that gets through your. Johns manville fiber glass batt and roll insulation is easy to install and does not require a certified installer.

We used two levels one with no paper went in first then the other with paper went on top facing into the attic between the studs in the floor of the attic. Johns manville r 21 kraft faced fiberglass insulation batt 15 in. Place the insulation with the facing side down on a piece of scrap plywood. If i am reading all this correctly the paper goes against the 2nd floor ceiling when laying between the studs of the attic floor technically the 3rd floor ad the second layer goes on top.

Kraft faced insulation is ideal for moisture control in exterior walls reduces sound transmission through walls ceilings. View the owens corning 2x4 wall floor insulation 46 48 46 48. If the insulation is too long for a space cut it to the correct size. Install batting between the attic s floor joists.

If there is already insulation between the joists increase the r value by installing unfaced roll insulation right on top. 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. Johns manville formaldehyde free kraft faced thermal and acoustical insulation offers r values up to r 49 and is offered in precut batts to fit standard wall cavities or rolls for custom installation in any size cavity. If you install faced insulation over existing blown in you re essentially putting the vapor barrier in the middle between the two layers of insulation.