It needs to be unfaced.
Puttine fiberglass batts in attic.
In this video this old house general contractor tom silva shows affordable ways to create an energy efficient attic.
Cut fiberglass batts to fit tightly between floor joists.
Lay the batts across the ceiling joists covering the existing insulation.
If you use fiberglass over loose fill make sure the fiberglass batt has no paper or foil backing.
Wear a long sleeve shirt gloves eye protection and a dust mask.
Diy fiberglass batts insulation.
Lay the fiberglass batt between the joists with the paper vapor barrier facing down toward the heated space.
Batts must be cut tightly and you can t have gaps.
Either works but rolls are recommended to quickly cover the area in your attic which is important when just beginning to learn how to insulate your attic because it s easier and more accessible for beginners.
Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all.
You might spend many hours kneeling in your attic to achieve this same result with fiberglass batts.
You can install fiberglass batts yourself right over existing insulation but follow these precautions.
You can add loose fill on top of fiberglass batts or blankets and vice versa.
Blown in fiberglass creates a seamless blanket in your attic.
Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used.
While wearing dust mask and gloves carry r 38 batts of unfaced fiberglass insulation into the attic.
Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation.
Lightly press the batt down between the joists.
As you will most likely find the attic floor will have joists running along it and both the vapor barrier and batt needs to be cut accordingly to fit in between these joists.
Most of insulation comes in rolls or precut fiberglass batts.
The fiberglass batts in the wall above it extend past the bottom of the wall cavity and fit loosely into the cavity of the 2 12 floor joists hiding the fact that there is no insulation in that void.
Make sure you use an unfaced batt one without a paper or foil layer so the insulation does not trap moisture in the ceiling.
Sloppy people aren t suited for this job.
