Insulating Existing Walls With Cellulose

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.

Insulating existing walls with cellulose. 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. One alternative is to pull down the drywall and use fiberglass batts. For one thing it is quite good at preventing the escape of heat.

Short of gutting the wall cavities which would allow full access and all possible options there are five insulation options. 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. 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.

Avoid drilling into areas of cold air returns. The top hole should be about 1 foot from the top of the wall. Cellulose insulation stands up reasonably well against insects and vermin because it is treated with borates. 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.

There are companies that do this such as enviroflex in melbourne however it is quite expensive. Roll or batt insulation. A bag of cellulose runs about 11 50 and will cover 36 7 square feet at a. As with any project each approach has its strengths and weaknesses.

Hi sally insulating existing walls with blow in insulation is difficult because of all the timber joists that are in the way. Fiberglass vs cellulose vs spray foam for wall insulation. 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.

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. Walls taller than 10 feet should have holes drilled every 5 feet. This can be added on top of old insulation.