Installing Attic Insulation In Dormer Walls Faced Or Unfaced
If you do use faced insulation you must take extra precautions to avoid having a fire.
Installing attic insulation in dormer walls faced or unfaced. The kraft paper itself is highly flammable. You can use either faced or unfaced batting for this installation. One method is to fill the gaps between the studs with faced batts and then wrap the entire passage with unfaced insulation. Avoid covering an old layer of faced.
If your attic floor has no insulation install faced batts or faced rolls between each joist with the moisture barrier facing down against the drywall or plaster ceiling below. You should only use faced insulation as the first layer of insulation. Measure the roll or batt of insulation to the area that you are going to install it in. If it is too big then trim it to size.
Installing insulation has almost the same steps for all. You can buy them unfaced or simply remove the paper or foil backing. When using insulation that has. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all.
You may be required to cover the kraft paper with other materials depending on your local codes. To make things safe cover your unfaced insulation with drywall to prevent the risk of a fire. Place the insulation with the facing side down on a piece of scrap plywood. The unfaced insulation can be secured to the framing with staples.
Run the unfaced strips perpendicular to the joists and butt each strip tightly together to form an airtight blanket of insulation. Set a t square or metal straightedge over the insulation and press it down firmly. Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation. For example if you plan on using your garage for your welding projects you run the risk of having a welding fire.
If the attic doesn t have any existing insulation use faced insulation with the paper facing toward the heated living space. If there is already insulation between the joists increase the r value by installing unfaced roll insulation right on top. Cut the insulation roll or batt to fit the length of the framing cavity if necessary. Remember to set the paper faced insulation upwards.
When adding more insulation to an attic that already has insulation use unfaced insulation. Place a new layer of unfaced batts perpendicular to the old layer to cover any gaps in the lower layer. Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used. Unfaced insulation can greatly reduce the risk of mold mildew or moisture damage in your house.
The basic installation steps are the same for walls ceilings floors and roofs in wood frame houses. Always use unfaced batts both when laying product for the first time and to prevent moisture from becoming trapped between new and old layers of insulation. Unfaced insulation in your garage.