How To Add Roll Insulation To Attic

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. This old house general contractor tom silva and host kevin o connor demonstrate the proper way to insulate an attic. To add insulation to the attic floor you will require enough blanket material to do the job a heavy duty shop vacuum plastic sheeting for covering the blanket material that will insulate the attic opening a heavy duty staple gun and utility scissors with long blades.

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Add weatherstripping around the perimeter and a sweep to the door of a walk up attic.

How to add roll insulation to attic.

Start at the lowest part of the attic where the roof meets the outer wall and unroll the insulation perpendicular to the joists back toward the. Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used. Overlap the seams by about 12 inches and run the plastic up the walls at least 6 inches. Laying rolls of blanket insulation.

See below for a shopping list and tools subscribe to this old house. Block all vents in the attic floor with baffles making sure to extend the baffles at least four inches above the planned thickness of your insulation. Spread plastic sheeting over the crawlspace floor to block ground moisture from entering the area. Cost effective way to save energy with this old house general contractor tom silva.

Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation. Pull down stair or ladder. 3 have a friend add material to the hopper. Attic hatch or door.

To install fiberglass batts over existing insulation lay the batts perpendicular to the joists so they do not compress the insulation below. Whether you live in a warm weather state as i do or in a cooler northern climate it s hard to stay comfortable and keep your energy bills in check if you don t have adequate insulation in the attic. Use a zippered insulated tent to keep the enclosure draft free attic tent at 7 attic cover insulator 120. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all.

Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. See below for a shopping list and tools. Carry a batt to the far end of the attic. Check the insulation manufacturer s instructions for the necessary thickness of plastic.

Affix rigid foam insulation to the attic side of the hatch or door.

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