Fiberglass insulation is an inorganic material made of tiny glass fibers. The fibers are made from silica, sand, limestone and recycled glass. The different ingredients are melted together at high heat, a chemical binder is added, and the fluffy batts of insulation provide thermal resistance and are fairly easy to work with. However, it is extremely important to cut and fit the batts properly between the studs and other gaps. At M&M Insulation, our professional team takes great care to ensure a proper fit and a well-sealed vapor barrier to ensure your Minnesota home receives the greatest R-value possible.