Adding Fiberglass Insulation To Your Attic

Block all vents in the attic floor with baffles making sure to extend the baffles at least four inches above the planned thickness of your insulation.

Adding fiberglass insulation to your attic.

Cover the attic hatch with a pillow of fiberglass insulation. Blanket insulation is available as batts or rolls and is the easiest diy insulation material. Loose fill fiberglass attic insulation still experiences convection but not nearly as much as old fiberglass used to. Add the right kind of insulation.

The first step of your project will be choosing an insulation type. It s available in fiberglass mineral wool plastic fibers and natural fibers. If you re just beginning the process of adding or replacing insulation throughout your house the attic is the perfect place to start. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.

Spray foam attic insulation. Most attics are insulated with blown in loose cellulose r 3 5 per inch blown in loose fiberglass r 2 5 per inch or fiberglass batts r 3 2 per inch. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. You can add loose fill on top of fiberglass batts or blankets and vice versa.

If you ve reached your target depth but still have a few bags left over keep adding the material at an even depth throughout the space until all the bags your calculations called for are empty. To get the target r value from the product you chose use the number of bags your calculations showed that you needed to insulate your attic never fewer. This type of insulation. Cellulose is recycled newsprint treated with a fire retardant.

Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used. Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation. Fiberglass is just that thin fibers of glass that trap air. 3 have a friend add material to the hopper.

You want a nice big puffy pillow of insulation to stop any air leaks says olson. When i think of insulation what comes to mind is fiberglass blanket insulation. Cut two layers of r 19 fiberglass batt insulation slightly larger than the hatch and staple duct tape to the hatch edges to secure it in place. If you check with the north american insulation manufacturers association they ll assure you that fiberglass or mineral wool is definitely your best choice for attic insulation.