Fiberglass insulation, a widely-used insulation material, comprises fine strands of glass woven into a texture resembling wool. Its primary function is to trap pockets of air, slowing the spread of heat and cold, thereby enhancing a building’s energy efficiency.

Available in batts, rolls, or loose fill, fiberglass insulation is versatile and fits various applications, from wall cavities to attics. It boasts a consistent R-value, indicating its thermal resistance, and is non-combustible, adding a layer of fire protection. While it’s lightweight and relatively easy to install, installers should use protective gear to prevent skin irritation or respiratory issues from glass fibers.

Over the years, advancements in manufacturing have improved its environmental footprint, with many products now containing significant amounts of recycled content. As a tried-and-true insulation option, fiberglass continues to be a top choice for homeowners and builders alike.