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Types of Attic Insulation

Insulating your attic can have a huge impact on your home’s energy efficiency. Learn how to measure your attic’s insulation, choose the right type and find a contractor or do it yourself.

Before beginning a home improvement project, always check with your local government or utility to see if you are eligible for financial assistance. This can help offset the cost of materials and labor.

Check out ENERGY STAR’s Attic Insulation Video Series to learn more about the benefits of attic insulation, what types are available and how to install it yourself or hire a professional.

Attic Insulation for Summer Heat: Keeping Your Home Cool

Spray foam insulation is inexpensive and the most popular choice for insulating an attic. They’re made of recycled sand and glass, are light-weight, and are flame-resistant. Fiberglass is also water-resistant, which can reduce the risk of mold.

Loose-fill cellulose insulation, which is blown in place, is an environmentally friendly alternative to fiberglass and mineral wool insulation. It’s rated with different R-values and, over time, will lose some of its density, so it is important to add 20% more than is actually needed.

Rigid foam insulation, which is cut to size and installed against the attic’s structural components, is typically a blend of polystyrene or polyisocyanurate. It has a high R-value and can be a good solution for preventing air leaks. However, this type of insulation emits gases during and after installation, so a layer of fire-resistant material should be added.

Rigid foam can also be difficult to work with. It is a very thick material that must be installed carefully to avoid gaps or the attic’s structural elements. It requires the use of specialized equipment and, in most cases, is only available from professionals.

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