While it’s not a much talked about subject, adding insulation to your attic can have significant impacts on your home, and one of the most popular types is fiberglass. A whopping 85% of American homeowners are lining their attics with fiberglass insulation as their insulation material of choice, making the glass fiber cotton candy look- a- like the top-selling insulator by a landslide. In which case, what’s made fiberglass such a popular household staple for the past several decades? Here’s…