Batt Insulation Installation Attic

Type and material of your insulation.

Batt insulation installation attic.

Contractor or insulation installer s fee. According to home advisor insulating your attic can cost between 1700 to 2100. Once the old insulation has been removed and the attic is cleaned the installation of the new insulation can begin. Position the batt of insulation at the outer edge of the attic and roll the batt in the channel between the joists toward the center of the attic.

The installer taking his best firefighter pose holds a large hose and blows the chunks into the attic. The air enters through the soffit vents near the attic floor travels up toward the ridge vent and exits through the attic. Item 305816 model rxss31525. Install baffles against the roof sheathing between rafters so insulation does not seal up these avenues of air circulation.

Rockwool safe n sound r 59 7 sq ft unfaced stone wool batt insulation 15 25 in w x 47 in l. Just slide them along the underside of the roof to the soffit and attach them with staples. The r factor of blown in fiberglass is usually 2 3 to 2 8 per inch of material. The main factors that impact the cost are.

A large machine outside churns the chunks and uses air to blow them up through the hose. Measure and mark the height on the baffle. To allow this airflow install rafter vents at the soffits. This allows the termination of the batt in an area.

The batt insulation will sit against the vents. For all eaves with vents fasten bottom of baffle in place to allow insulation to completely cover the top plate. Verify the height allows for 1 inch of required air space. Cut side fin and fold baffle at the measured mark to allow for correct insulation height.

Blown in insulation thickness can vary in an attic space. Typically this is done either by placing batt or roll insulation in between the ceiling joists or by using a blower to blow loose fill insulation in between the joists. This will lead to non uniform r values. Square footage of your attic.