How To Install Attic Insulation Over Existing

So if you re installing insulation in an attic that doesn t have any used faced insulation and put the paper side down toward the ceiling.

How to install attic insulation over existing.

For the majority of installations there are basically two different methods used to install radiant barrier foil in an attic. The first is stapling foil to the bottom of the roof rafters the second is laying it out over the existing attic ceiling insulation. This means of insulation has its disadvantages. To install blown in insulation in existing walls holes are drilled at the top of each stud space usually on the exterior and material is blown in.

The vapor retarder on top of or between layers of insulation can trap moisture. Lay a two by four on top temporarily compressing the insulation to a manageable. To cut blanket style insulation place the product over a piece of plywood with its paper or foil side down. Energy saver walks us th.

Cost effective way to save energy with this old house general contractor tom silva. 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. To see how to add insulation out to the eaves see installing rafter vents. Check the insulation manufacturer s instructions for the necessary thickness of plastic.

See below for a shopping list and tools subscribe to this old house. Any new batt or roll insulation installed over existing insulation in the attic needs to be without a vapor retarder face. It is important that the insulation be evenly distributed with no low spots. Spread plastic sheeting over the crawlspace floor to block ground moisture from entering the area.

To install fiberglass batts over existing insulation lay the batts perpendicular to the joists so they do not compress the insulation below. If you re installing additional insulation in an attic that s already insulated use unfaced insulation that doesn t have a vapor barrier. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. Overlap the seams by about 12 inches and run the plastic up the walls at least 6 inches.