Fiberglass is one of the most established and widely used insulation materials, available in both batt and blown-in loose-fill forms to suit different applications. It’s naturally resistant to moisture and doesn’t support mold growth as readily as some organic materials, and it’s also non-combustible, adding a layer of fire resistance to your home’s construction. Fiberglass offers solid thermal performance at a comparatively affordable price point, making it a popular choice for walls, attics, and floor cavities alike. Beyond thermal benefits, it also helps dampen sound transmission between spaces. Because it comes in various thicknesses and R-values, fiberglass can be tailored to meet the specific needs of different areas of your home, from standard wall cavities to deeper attic applications requiring higher insulation levels.