How Install Insulation In Attic

The pros often use spray foam insulation or blow shredded insulation.

How install insulation in attic.

In the attic install a card that indicates insulation levels in the house to meet code requirements. Next any stored belongings or debris in the attic are removed and stored in a safe location that is out of the way. How to install fiberglass insulation step 1. If you re installing additional insulation in an attic that s already insulated use unfaced insulation that doesn t have a vapor barrier.

Overlap the seams by about 12 inches and run the plastic up the walls at least 6 inches. Spread plastic sheeting over the crawlspace floor to block ground moisture from entering the area. Installing attic insulation requires first preparing the surfaces around the attic entry to ensure that any contaminants in the attic aren t spread throughout the home. More insulation installation tricks and tips work from the perimeter of the attic toward the door or hatch so that you don t trample all over the insulation you just.

When installing multiple layers of insulation for optimal thermal performance install the first layer bottom layer parallel to attic framing members and flush with both bottom and top. Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and. Begin laying in. There are many different ways to install insulation.

While wearing dust mask and gloves carry r 38 batts of unfaced fiberglass insulation into the attic. Soffits are part of the overall. If installing fiberglass mats start by laying the mats at the furthest point from the attic access. 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.

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. When laying insulation it s a common mistake to cover up the soffit vents. Then feed 1 2 a bag of fill into the machine and turn on the hose to start blowing the insulation. To install insulation batts and blankets if using insulation with a vapor retardant facing install the material with the vapor retardant side down.

Lay the batts across the ceiling joists covering the existing insulation. Check the insulation manufacturer s instructions for the necessary thickness of plastic. If installing shredded insulation fill the attic space at least 15 inches high with insulation. Connect the hose to the blown in insulation machine.