KnowraFiberglassLinked fromLinked fromThe 5 pages that link to Fiberglass, each with the reason it gives.All 5Broader topic 2Related 1Compared with 2InsulationBroader topic: Its fibers trap still air, providing thermal resistance in walls and roofs.Unsaturated polyester resinBroader topic: Unsaturated polyester is a widely used matrix for fiberglass products.