Insulating Existing Walls With Cellulose

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.

Insulating existing walls with cellulose.

Cellulose insulation has an average thermal value of r 3 7 so you d need just over five inches to equal an r 19 batt. Roll or batt insulation. Blowing in attic cellulose is conceivably a do it yourself job. Shredded fiberglass and cellulose can be blown in because their small particles fill in the nooks crannies and irregular areas of wall space quite well.

When walls are already finished injecting loose fill cellulose insulation is one of the few ways of adding insulation. Do not tack down roll or batt insulation because compacting reduces its effectiveness or r value. Loose cellulose dense packed cellulose loose blown in fiberglass dense packed fiberglass and injection foam. This particular type of insulation is made from recycled newsprint treated with chemicals and has a great deal to offer anyone interested in better quality insulation.

Short of gutting the wall cavities which would allow full access and all possible options there are five insulation options. Avoid drilling into areas of cold air returns. Cellulose insulation stands up reasonably well against insects and vermin because it is treated with borates. Your choice will depend on your specific project details and your skill levels.

Cellulose insulation cellulose is another type of insulation that can be blown into existing walls. There are companies that do this such as enviroflex in melbourne however it is quite expensive. A bag of cellulose runs about 11 50 and will cover 36 7 square feet at a. Hi sally insulating existing walls with blow in insulation is difficult because of all the timber joists that are in the way.

The top hole should be about 1 foot from the top of the wall. Blowing in insulation step by step 1 use a stud finder to locate studs in the wall. One alternative is to pull down the drywall and use fiberglass batts. This type of insulation typically fiberglass or cellulose insulation can be added over existing insulation provided it s installed perpendicular to joists.

Comparison of three ways to insulate enclosed walls with the dense packing technique proving to be the best way. Fiberglass vs cellulose vs spray foam for wall insulation. Walls taller than 10 feet should have holes drilled every 5 feet. Probe all cavities with a plumb bob to determine the depth of the cavity and find any difficult areas that may alter the flow of loose fill cellulose insulation.