The attic is an often overlooked area of the home. It is usually out of sight, out of mind until there is a problem such as a leak or rodent infestation. However, it is a space that can provide significant energy savings and improved comfort.

Depending on where you live and the type of insulation you choose, your attic can have a variety of R-values. The higher the R-value, the better the insulating properties.

Fiberglass batts are the most common attic insulation material. They are made of recycled sand and glass and are fire-resistant.

The Role of R-Value in Attic Insulation Performance

Cellulose is another insulation option for the attic. It’s typically made of recycled paper with boric acid added for insect control and fire resistance. It has an R-value of about 3.5 per inch. It is more expensive than fiberglass batts.

Mineral wool has an R-value of about 3.5, and is an excellent choice for insulating the attic because it can withstand high temperatures. It is available in loose-fill or spray-on forms, which require professional installation.

316 Insulation is more expensive than fiberglass or cotton batting, but it has an R-value of about 4. It’s sprayed on the attic roofline and expands, creating a vault-like seal and providing a very effective insulator.

Before insulating your attic, it’s important to make sure there are no air leaks and that the roof and other components are in good condition. Insulating the attic can help a house become more energy-efficient and comfortable, and can also improve indoor air quality by stopping outside pollutants from coming into the house.

316 Insulation of Tacoma
3010 N 27th St Tacoma WA 98407
253-201-2962