How To Put Up Insulation In Attic

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.

How to put up insulation in attic. Wood joists must be covered to allow the air to move. 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. 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.

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. 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. 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.

For the center areas hold the hose level and blow in insulation evenly until you ve reached your level lines photo 6. Lay the batts across the ceiling joists covering the existing insulation. The first layer should have the facing against the drywall to act as a vapor barrier. When rolling the insulation cut it to length using a utility knife.

Next any stored belongings or debris in the attic are removed and stored in a safe location that is out of the way. Blow in insulation until the hopper is empty. 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. Continue laying down the insulation making sure the batts are pressed tightly together at all edge and end joints.

Insulating a finished attic there are two basic ways to insulate a finished attic. Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and. Using a straightedge as a guide make your cut image 2. Begin laying in the insulation starting at an area farthest from the attic access image 1.

While wearing dust mask and gloves carry r 38 batts of unfaced fiberglass insulation into the attic. See below for a shopping list and tools. You should install two layers of insulation in your attic. 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.