How To Add Cellulose Insulation To Attic
Make sure the fill s depth is uniform across the attic.
How to add cellulose insulation to attic. Lay the batts perpendicular to the joists so. Move across the attic until you ve hit your desired height at every point. Densely packed bales of cellulose are fed into the hopper of an insulation blower powered by an electric motor. The cellulose is blown into the attic or walls through long flexible tubes that run from the blower to an application nozzle.
Inspecting your attic insulation. Rotating teeth or prongs at the bottom of the hopper fluff up the cellulose. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Unlike fiberglass insulation installed in roll out batts on the attic floor.
Fasten blocking around the hatch or door to allow the material to be installed around this area without escaping. Roll or batt insulation. For the center areas hold the hose level and blow in insulation evenly until you ve reached your level lines photo 6. This type of insulation typically fiberglass or cellulose insulation can be added over existing insulation provided it s installed perpendicular to joists.
Loose fill cellulose insulation is composed of pulverized paper and fabric material treated with a flame retardant. Do not tack down roll or batt insulation because compacting reduces its effectiveness or r value. To make it easy to eyeball how level the material is as you blow it in screw depth guides to joists throughout the space. 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.
How to install attic insulation over existing insulation wear a long sleeve shirt gloves eye protection and a dust mask. 3 have a friend add material to the hopper. Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live. Make sure you use an unfaced batt one without a paper or foil layer so the insulation does not trap moisture in the ceiling.