What is the most common type of insulation used in homes?

The most common type of insulation used in homes is fiberglass insulation. This type of insulation is made from tiny glass fibers that are woven together to create a material that is lightweight, flexible, and easy to install. Fiberglass insulation comes in batts or rolls, and is often used to insulate attics, walls, and crawl spaces.

Another common type of insulation used in homes is spray foam insulation. This type of insulation is made from a liquid foam that expands and hardens to create a seal against air leaks. Spray foam insulation can be used to insulate walls, floors, and ceilings, and is often used in areas where traditional insulation is difficult to install.

Cellulose insulation is another popular type of insulation used in homes. This type of insulation is made from recycled paper products, and is treated with fire retardants to make it safe for use in homes. Cellulose insulation is blown into walls, attics, and other areas using special equipment.