Proper Insulation Installation In Attic

Because the simplest and cheapest way to insulate an attic is to add material to the floor.

Proper insulation installation in attic.

In most climates it needs a vapor barrier. Ensure ends of insulation are butted together and flush to underside of framing. Attic insulation requires special equipment and adequate ventilation. Or fold it back and up between the rafters.

Like other batt type insulation fiberglass has a predictable r value if not compressed but is difficult to fit around obstacles without leaving gaps. Cut the insulation roll or batt to fit the length of the framing cavity if necessary. Place the insulation with the facing side down on a piece of scrap plywood. Ensure insulation extends to the outside edge of the exterior top plates and is flush against any ventilation dams baffles.

If using insulation with a vapor retardant facing install the material with the vapor retardant side down. To install insulation batts and blankets. On average an attic insulation project costs between 1 50 and 3 50 per square foot. Add insulation to attic.

Use our roll insulation calculator to estimate how much roll or batt insulation you ll need. Fiberglass batts the insulation found in most houses in the u s are inexpensive and quick to install. If you re insulating framed walls make sure the insulation is the correct thickness for your wall studs. You only want one vapor barrier in your attic and it should be as close to the ceiling as possible to prevent warm moist air from coming up from the heated house and condensing when it hits the cold air in the attic.

Existing 3 4 inches of insulation. Diy home repairs are becoming more popular but this is one job you should leave to the professionals. Friction fit insulation snugly between and parallel to all standard and narrow attic framing members. Measure between joists if insulating a floor or attic or studs if insulating unfinished walls to find the correct width for the insulation.

This includes the cost of professional installation and any necessary electric work. Recommended insulation levels for retrofitting existing wood framed buildings. Don t push batt or blanket insulation past the top plate at the end of joist runs. Or pour fill insulation into such areas.

Set a t square or metal straightedge over the insulation and press it down firmly. Begin at a wall and work toward the center of the attic floor or the entryway carefully placing insulation between joists and ensuring a snug fit. The basic installation steps are the same for walls ceilings floors and roofs in wood frame houses.