How Does Blown In Fiberglass Insulation Work

You can do it yourself for about 500.

How does blown in fiberglass insulation work.

Cellulose blown in insulation reduces air leakage more effectively than fiberglass batting or fiberglass blown in insulation. Blown in insulation overview. The material can be either fiberglass or cellulose and consists of fiber foam or other materials in small particles and can even feel like down. How fiberglass insulation works.

If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. There are three types of blown in insulation. Cellulose is the better insulation. It is non conductive conveniently available in either roll or batt form and has gone on to become the most popular insulating material currently available.

Fiberglass is a composite material made of a plastic matrix reinforced by tiny glass fibers. Blowing attic insulation isn t hard but it s dusty sweaty work. It is lightweight yet strong and since glass isn t a good conductor of heat it s a very effective insulation material. Fiberglass manufacturers have developed blown fiberglass insulation they claim won t settle over time.

Fiberglass insulation was created in the early 1930s by a scientist at owens corning as an alternative to the highly combustible materials used to insulate homes in those days. This concern can actually be avoided in both cases if the insulation is more densely packed in the spaces but fiberglass will require special training and tools to do so and even then it proves more difficult than cellulose. How does insulation work to prevent heat loss. The three most common types of blown in insulation are loose fill fiberglass cellulose and rock wool each with its own pros and cons.

How much does attic insulation cost. How it is done for walls with existing closed up walls blow in insulation is the highly preferred way to go unless you want to rip off exterior siding or interior drywall to access wall cavities. The pros charge 1 500 to 2 000 to do a 1 200 sq ft. Blown in insulation sometimes referred to as loose fill insulation is insulation literally blown in with a blowing machine.

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. Where a fiberglass blanket already exists in the attic the additional blow in insulation is usually spread right on top of the fiberglass.