Installing Unfaced Attic Insulation

Lay unfaced fiberglass roll or batt insulation between or across ceiling joists in attics with some existing insulation.

Installing unfaced attic insulation.

As a result of evaporation people breathing and plant respiration air carries some. The basic installation steps are the same for walls ceilings floors and roofs in wood frame houses. Calculate how much you need. Fold out the paper flange along one side of the insulation.

Now here s a situation where a homeowner what looks like many years ago added insulation they added a three inch layer but. Learn how one caller made an installation mistake and increased his chances of mold and condensation when he tried to add unfaced insulation over his blown in attic insulation. Creating a moisture barrier. Cut the insulation roll or batt to fit the length of the framing cavity if necessary.

Unfinished or uninsulated attics need a layer of protection against air migration. What is the right insulation for an attic. I ve always said adding insulation to your attic is some of the best money you can spend to make your house more energy efficient but whether to use faced or unfaced insulation is a great question. Unfold the mounting tab along each vertical edge of the batt.

Once you have successfully cut it down to size gently fit it into the cavity without using force. Place the insulation with the facing side down on a piece of scrap plywood. You can buy them unfaced or simply remove the paper or foil backing. It s important not to lay faced insulation on top of faced insulation.

Fastening insulation gently press the insulation between two studs with its moisture barrier facing out toward the room. 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. Choose your insulation type. Position the flange flat against the side face of the wall.

Check pipes and vents. Place unfaced insulation on top of existing material such as loose fill. Unfaced insulation is just insulation without an attached moisture barrier. Use a staple gun and.

If you re using unfaced insulation in an area where a vapor barrier is required or recommended you may be able to add your own barrier using plastic sheeting. Place a new layer of unfaced batts perpendicular to the old layer to cover any gaps in the lower layer. Flatten the tabs against the front edge of the stud on each side of the batt. Set a t square or metal straightedge over the insulation and press it down firmly.

Before installing determine the insulation material best suited for your home.