Insulate Attic Joists

1a attic access door.

Insulate attic joists.

Cut a piece to the proper length and press it in place. Attic insulation is installed in the floor of the attic so you ll need to do a few things to make the process straightforward. Keep the baffle about 3 away from the fixture figure 3. In unfinished attic spaces insulate between and over the floor joists to seal off living spaces below.

Insulating the attic floor. Although it s common to talk about installing insulation on the attic floor most attics don t really have a floor. Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and. With a helper to load the blower with insulation as needed start at the perimeter of the attic and work toward the attic access door.

Level uneven spots with a rake. No matter what kind of insulation you currently have in your attic one quick way to determine if you need more is to look across the span of your attic. They have floor joists or the bottom chords of roof trusses with drywall below. If your insulation is just level with or below your floor joists i e you can easily see your joists you should add more.

When you are in the attic you re usually stepping carefully on top of the floor joists looking down at the back side of the drywall ceiling. The insulation should not bulge past the joist faces. Standard joist spacing for the installation of attic flooring materials is 16 inches on center oc meaning the distance from the center of one joist to the center of the next joist is 16 inches. Start by installing temporary lighting such as clip lights and laying a few sturdy boards along the joists to create a walkway.

In practical terms you can choose between mineral wool or insulation boards. If you do not use the attic much it is pointless heating this area. 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. Use a piece of 1 x 6 or 1 x 8 lumber to create a dam on either side of the fixture.

So insulating the floor of the attic is not only the best solution but it is also the simplest and cheapest. To install fiberglass insulation start by measuring out each section. Staple a 4 to 8 mill.