Attic Insulatiopn Types

It s a fast and easy diy project that two people can do in an afternoon.

Attic insulatiopn types.

The three most common types of blown in insulation are loose fill fiberglass cellulose and rock wool each with its own pros and cons. For diy attic insulation you ve got two choices. Blowing insulation into walls. If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary.

Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. Closed cell and open cell aka 2 pound and pound respectively. In particularly cold climates you might go up to r 60. It consists of flexible fibers most commonly fiberglass.

Blanket insulation the most common and widely available type of insulation comes in the form of batts or rolls. Here the insulation can be blown right over top of existing insulation to any depth or r value. Installing this type of insulation is an inexpensive and diy friendly project since the materials are designed to fit into the standard width between wall studs attic rafters and floor joists. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass. Choose from two types. The most common insulation materials are fiberglass cellulose and foam. They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively.

The type of insulation you need depends on which type is currently installed and the required r value. You also can find batts and rolls made from mineral rock and slag wool plastic fibers and natural fibers such as cotton and sheep s wool. Both can be added to uninsulated attics or layered over existing material. The big disadvantage with spray foam is cost.

Once you ve decided which type is best for you examine the material options and prices to home in on the right product. There are three types of blown in insulation. I d blow insulation on the attic floor after air sealing of course. In general an attic s r value should be between r 30 and r 49.

Spray foam offers the best attic insulation performance available. Blowing insulation into an attic the most popular project for using blown in insulation is adding insulation to attics. Loose fill or batt the common term for blanket insulation.