How To Put Up Insulation In Attic

The first layer should have the facing against the drywall to act as a vapor barrier.

How to put up insulation in attic.

When you reach the end of a line pull the insulation back slightly then place it on a joist so there is a solid surface to cut on. If only the living space will be insulated wrap the insulation around the room s walls and ceiling and then continue along the floor of the non living space. Wood joists must be covered to allow the air to move. Next any stored belongings or debris in the attic are removed and stored in a safe location that is out of the way.

Old insulation is removed and the attic space is cleaned out. In this case the area behind the knee wall will be uncomfortably hot or cold. Blow in insulation until the hopper is empty. 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.

Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and. The first layer will sit between the joists and the second layer will run perpendicular over the joists. Then pivot in place and do the same thing to the other side. Begin laying in the insulation starting at an area farthest from the attic access image 1.

When rolling the insulation cut it to length using a utility knife. 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. Move across the attic until you ve hit your desired height at every point. For the center areas hold the hose level and blow in insulation evenly until you ve reached your level lines photo 6.

See below for a shopping list and tools. 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. Using a straightedge as a guide make your cut image 2. 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.

If you want to insulate an area in your crawl space attic or basement spray foam insulation might be appropriate for the job using a low pressure sprayer and the proper safety equipment. You should install two layers of insulation in your attic. While wearing dust mask and gloves carry r 38 batts of unfaced fiberglass insulation into the attic. This old house general contractor tom silva and host kevin o connor demonstrate the proper way to insulate an attic.