How To Blow Insulation Into Walls From The Attic

If your walls and attic aren t insulated cellulose can be blown into your walls from the inside or outside through small 1 inch 2 5 cm holes and installing insulation in the attic is even easier.

How to blow insulation into walls from the attic.

Use a drill and hole saw to make a penetration on center between each pair of studs into the. Blowing in attic cellulose is conceivably a do it yourself job. With boric acid added for fire resistance shredded recycled telephone books tax forms and newspapers all contribute to making safe cellulose insulation blown in cellulose is injected into the wall cavities by a series of holes drilled into either the inside or outside of the walls. Then mark each stud.

With a hole saw cut a small hole between 2 and 3 inches wide between two studs and near the top of the wall and place the cut portion aside you will reattach this later. Blowing in insulation step by step 1 use a stud finder to locate studs in the wall. As the cavity fills pull the hose out of the hole. For the center areas hold the hose level and blow in insulation evenly until you ve reached your level lines photo 6.

Wrap and hold a rag around the hose where it touches the wall and have your friend turn the blower on. Go slow to ensure the cavity gets packed tight. Blown insulation both cellulose and fiberglass comes in bags and is available at most home and hardware stores. Let the hose sit on the drywall to fill the eave areas giving it a shake to move it from bay to bay.

Place the head of the blown in insulation hose into the hole and continue to let it drop towards the bottom. We offer our review of the three most popular types of attic insulation with a look at each one s pros and cons. Use a stud finder to locate each stud and any horizontal blocks that exist at or near the center of the wall s height. Repeat this step between each pair of studs.

You can blow three rafter bays on each side of the attic from one position. Your options for attic insulation range from radiant barriers to sheets of mineral wool but most homeowners stick with products made from cellulose or fiberglass. Insulating a completed wall with an insulation blower is easy. You should also be able to rent a machine to blow the insulation along with 3 inch hoses to carry it up to the attic at the same store.