Glass wool, also referred to as fiberglass insulation, is comprised of recycled glass and sand melted at large temperatures and spun into fine fibers. One can put in batts in two layers across an unfinished attic ground, perpendicular to one another, for enhanced efficiency at avoiding heat bridging. Blankets can https://glass-wool-insulation37048.fitnell.com/77061702/air-conditioning-insulation-material-for-dummies