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To keep heat in and cold out, you need the best attic insulation. See shopping tips and top-rated options here.
This map shows thermal recommended levels of insulation for various climate zones, based on recommendations from the U.S. Department of Energy (DOE) and the International Energy Conservation Code (IECC).
Looking for the best attic insulation? That answer depends on your definition of “best.” The best performing way to insulate an attic doesn’t always align with the most cost-effective way. First, let’s discuss the most common types of insulation available for attics: fiberglass batts, cellulose, loose-fill fiberglass and spray foam.
R-Value is a measure of insulation’s ability to resist heat traveling through it. The higher the R-Value the better the thermal performance of the insulation. The table below shows what levels of insulation are cost-effective for different climates and locations in the home. Learn how to take action today and Rule Your Attic! with ENERGY STAR.
Here’s a rundown of the four types of attic insulation materials and installation methods at your disposal. Air is one of the best thermal insulators, and fiberglass insulation makes use of it. Manufactured from glass fibers, fiberglass is woven into loose cotton candy-like bundles that can be installed multiple ways:
Proper attic insulation helps regulate the temperature in your home, increasing energy efficiency and reducing your utility bills. Our guide explores the benefits, key steps, materials, and considerations for anyone considering adding insulation to their attic. Read on to learn more.
The recommended level for most attics is to insulate to R-38 or about 10 to 14 inches, depending on insulation type. Add the Right Kind of Insulation When adding additional insulation, you do not have to use the same type of insulation that currently exists in your attic.
Attic insulation is key to stabilizing internal temperatures, reducing heat loss in winter, keeping homes cooler in summer, comfort and saving energy. Insulation slows down the thermal transfer between the inside and outside of a house which is critical in attics that face extreme temperatures due to direct roof exposure.
We tested dozens of attic insulation materials and methods so you don't have to. Read our detailed review and learn which insulation is best for your attic.
The most effective attic insulation is closed cell spray foam. Spray foam will create an airtight seal and doesn’t absorb water. Spray foam insulation is also the most expensive...