Attic Floor Insulation Boards

If your attic has flooring atop the joists you may need to remove some of the flooring planks before you can blow insulation into the joist cavities.

Attic floor insulation boards.

Tips and tricks to make attic flooring easy plywood floor in attic of older home. As such adding a floor can cause the insulation to compress thus reducing the efficiency of the fiberglass insulation. Place a 2 inch by 3 inch board directly on top of the joist nearest to the edge of the attic with its largest. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.

Plan to pull up the flooring and layer new insulation on top of the old. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. When installing foam insulation boards in the attic make sure you start from one corner and work your way around the room. Step 3 place caulking and furring strips.

Since an average attic needs 16 inches or more of insulation the insulation is always thicker than the ceiling joists or trusses. The superattic system utilizes proprietary silverglo rigid foam insulation panels to fully seal and insulate the attic directly beneath the roof rafters and directly inside the gable ends. Because the simplest and cheapest way to insulate an attic is to add material to the floor. Boards lock together using a tongue and groove design.

Create additional storage in otherwise unusable attic space. Blow insulation between the ceiling joists figure 5. Watch this easy diy guide on how to fit loft boards giving you a strong storage platform above even thick insulation in your loft or attic. Foam insulation boards can be attached to concrete walls as well and in such a case care should be taken not to chip the cement.

Walk to one end of the attic by carefully stepping only on the wooden ceiling joists. Select pieces that will allow you to access most of the spaces in between the joists. 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. Osb attic decking has a convenient tongue and groove design for easy installation.

Use the tongue and groove feature to lock multiple boards together and improve the organization of your storage space. But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates.