Glass wool, often known as fiberglass insulation, is comprised of recycled glass and sand melted at higher temperatures and spun into wonderful fibers. You can put in batts in two layers across an unfinished attic flooring, perpendicular to each other, for enhanced success at preventing heat bridging. Blankets can go https://paxtonmapds.bloggip.com/36853851/getting-my-glass-wool-insulation-to-work