Insulation decreases the amount of heat entering from outside when it’s hot, and traps warmth inside when it’s cold. Insulation is rated by its R-value. R-value measures how resistant types of insulation are to heat flow. R-values vary based on the type, thickness and density of the insulation material. Typically, a higher R-value means better climate control and better energy efficiency for your home. However, your home may not need insulation with the highest R-value. The Department of Energy recommends different insulation levels based on your region to increase energy efficiency.
Most homes are insulated in the attic and any floors located above unfinished basements or crawl spaces. The most effective places to add insulation to older homes are exterior walls, attics, basements and crawl spaces. No matter how old your home is, it’s a good idea to see if there are ways to improve its insulation. The North American Insulation Manufacturers Association reports that about 90-percent of single-family homes in the U.S. don’t have sufficient insulation.
Most of the energy used in your home is for heating and cooling. Having your home well insulated is key to keeping the temperature comfortable and your energy bills low. This guide will teach you about the different types of insulation and where to insulate your home.