When it comes to insulating your home, the R-value of the insulation material is an essential factor to consider. R-values measure the thermal resistance of a material, and the higher the R-value, the better the insulation. Depending on where you live and the part of your house you are insulating, different R-values are recommended. For exterior walls, R-13 to R-23 is typical, while R-30, R-38, and R-49 are common for roofs and attics.
Insulation indices are measured in R values per inch of thickness. An R value indicates how well a type of insulation can prevent heat from entering or leaving the house. Insulation R-values vary depending on the type, thickness, and density of the insulating material. Generally, a higher insulation R rating means better climate control and better energy efficiency for your home.
A higher insulation R-value also usually means a higher price. The higher the R value of the insulation, the greater the insulating power. You'll see the R-values of the insulation indicated on the product packaging and, often, on the product itself. Your attic should have a certain amount of insulation, and the recommended level of insulation for your attic depends on where you live. Having the right amount of insulation in the attic can help you maintain a comfortable temperature throughout your house and save money on energy bills*, as well as avoid major problems, such as ice accumulations in winter. As in attics or anywhere else in the house, adding more layers of insulation to exterior walls is essential to obtain a higher R value and better thermal performance.
To determine what level of insulation is best for your attic, you should first find out what type of climate you live in. Different climates require different levels of insulation to ensure optimal energy efficiency and comfort. For example, if you live in a cold climate, you may need an insulation with an R value of at least 30 or higher. On the other hand, if you live in a warm climate, an insulation with an R value of 13 or higher may be sufficient. Once you know what type of climate you live in, you can use an insulation R-value table to determine what level of insulation is best for your attic.
Find your area on the map and then use the insulation R-value table to determine what level of insulation is needed to properly insulate your attic, walls, floors, and mezzanines. For example, if your attic already has fiberglass insulation blankets installed, you can improve their R value by installing blown cellulose insulation on top of them.
