Cellulose And Spray Foam In Attic

The benefits of cellulose include.

Cellulose and spray foam in attic.

But that only works if the installer can get it into the places where most of the air leakage happens. Replace cellulose with spray foam address the air leaks and convert a vented unconditioned attic into an unvented conditioned attic. Unlike other kinds of insulation like cellulose spray foam provides better insulation because its fluid nature allows for it to go through tiny crevices. Here the traditional favorite is blow in cellulose insulation although spray in foam is becoming steadily more common.

By martin holladay issue 270 oct nov 2017. Spray foam attic insulation. Pro better insulation. Five years ago we noticed.

Nothing unusual about that. We have about r 45 worth of blown cellulose on the attic floor of our 100 year old chicago home and a furnace and ductwork in the attic. Like spray foam it s able to work its way into hard to reach areas. Earlier this year i got a question about a home that had spray foam insulation in the attic.

Closed cell and open cell aka 2 pound and pound respectively. Cellulose is a loose fill product composed of small particles of pulverized paper and cloth treated with a fire retardant. They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively. It s blown into the attic and wall spaces under air pressure through hoses.

A properly done spray foam job not only insulates but also greatly reduces the air leakage of a home. If i had a choice between fiberglass foam and cellulose i would go with cellulose a wet spray cellulose install can provide an r value of around 3 4 per inch. Spray foam insulation is an incomplete name. We are the number 1 rated insulation contractor in northeast and we promise to work hard for you.

Studies have shown it offers better fire protection than fiberglass. Choose from two types. Cellulose is a loose fill insulation made from chopped up discarded newsprint. Spray foam offers the best attic insulation performance available.

With open walls you can install fiberglass roll insulation although spray applied foam insulation is also possible. It really should be called spray foam insulation and air barrier. Once installed in the attic cellulose loose fill insulation looks like mounds of freshly fallen snow covering the attic floor. A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits but then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents.