People often focus on attic insulation when they want to improve the energy efficiency of their homes. However, wall insulation is important too. If you have an existing home, you may not know what kind of wall insulation you have or what condition it is in. Fiberglass batt insulation is a popular choice for walls, but if you want to add more batt insulation, you'll have to rip out the drywall. A better choice is to use blown-in insulation. Here's how it works.

What Blown-In Insulation Is Made Of

Blown-in insulation is made from fiberglass or cellulose. Fiberglass is the same material used to make batt insulation, but instead of being pressed into flat sheets, it is in small pieces so it can be blown into a tight space. It's made to be waterproof so you don't have to worry about condensation causing the insulation to clump up. Cellulose is made from recycled paper products such as cardboard and newspapers. It is treated with a fire retardant so it is safe to use in your home.

How The Insulation Is Installed

The insulation can be applied to an exterior wall from the outside, which saves your home from being overrun by a crew and equipment. First, a few shingles are removed from the side of the home and small holes are drilled for access points. Then, a hose is placed into one of the holes and the hose is attached to a commercial blower machine that is filled with the insulation. The machine blows the insulation through the hose and into the walls of your home. Because the insulation is in small pieces, it can settle in grooves and cracks to offer the utmost protection from air leaks in the walls.

Once the wall cavity is filled, the holes are sealed and the shingles replaced. The installation process goes fast and there is little disruption to your family or damage to your property. When the process is complete, the spaces between the walls of your home are packed full of insulation.

Benefits Of Blown-In Insulation

One of the big benefits of using blown-in insulation is that it allows you to increase the insulation between your existing walls without having to tear apart your home. By increasing the amount of insulation, there will be less heat loss through the walls. That means the inside of your house stays warmer in the winter since the heat won't seep out. It also means your home stays cooler in the summer since heat from the outside won't be able to waft through the walls. Another benefit of blown insulation over batt insulation is that it can cover irregular shapes and mold itself around pipes and other obstacles in the way. This greatly reduces air leaks that cause chilly drafts in the winter.

While attic insulation is very important when you want to control the climate in your home in an affordable way, you also want to make sure the insulation in your walls and crawlspace is adequate. This keeps you more comfortable and your power bills lower.