Blown Fiberglass Insulation Into Attic

Ten inches of blown insulation provides an insulating value of approximately r 30 1 inch of fiberglass provides about r 2 7 while 1 inch of cellulose is approximately r 3.

Blown fiberglass insulation into attic.

A bag of fiberglass insulation will cover approximately 65 square feet. 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. Each bag of fiberglass insulation will cover approximately 65 square feet of attic space to a depth of 10 inches cellulose insulation covers half as much. R 30 to r 60 insulation will cost between 0 15 to 0 65 cents per square foot.

Before choosing blown vs. Blown in insulation sometimes referred to as loose fill insulation is insulation literally blown in with a blowing machine. When blown into attics and wall spaces loose fill. Blown in spray foam batts and blankets.

We offer our review of the three most popular types of attic insulation with a look at each one s pros and cons. Net net for many reasons you re probably going to decide this job is well worth doing. The old insulation is now keeping the cool air from filtering into the attic providing a better semi conditioned space. How much does blown in attic insulation cost.

When the attic is sprayed with foam now the reverse is happening. Fibreglass insulation is 100 percent flame resistant and will not burn. This type of insulation comes in two types of densities medium and high which translates into an r 11 and r 15 for a standard 2x4 wall. Attic insulation is accomplished with either fiberglass blankets batt or blown in insulation.

This light as air insulation is manufactured from glass that is heated to a liquid and then spun into thin fibers. A bag of cellulose insulation covers about 30 35 square feet of attic space if you are blowing in 10 inches. An average size attic of 1 200 square ft. It s also worth doing the right way.

It did not work well but it does slow it down. Most of the fibreglass insulation is normally made with recycled material and due to that it reduces the carbon footprint. On average you can expect to pay between 1 25 to 2 00 per square ft. Well the old insulation was used to protect the living area from the hot attic.

Will usually cost about 1 600 2 700. Batt insulation take time to read this column. Batt insulation is available at home centers and lumberyards.