Some of the environmentally green commercial roofing product are made with recycled glass, and they’re also known under the names "recycled glass felt", "crusher run", and just plain "recycled glass". Recycled fiberglass roofing materials have become a very popular choice both economically and environmentally due to the fact that it uses up recycled products otherwise destined for landfills. As fiberglass has been one of the main recyclable components used in production of auto body parts (dashboards, fenders, etc.), this market provides a constant supply of source material.
There are two types of recycled glass used for commercial roofing maintenance
products and they are cullet (from production processes) and recycled glass (typically bottle glass). Cullet
is the raw material obtained as a by-product from the manufacturing of fiberglass insulation. Used cullet has been sorted, cooled, washed and is ready for research. Cullet can contain many contaminants such as paper labels that must be separated. Bottle glass may have other inorganic contaminants such as sand, dirt or metal resulting from the recycling process. Glass shavings are melted at high temperatures together with resin to produce one-ply or laminated sheets of suitable thicknesses for roofing applications. The sheets are fitted together using an adhesive tape along their edges to obtain waterproof areas more resistant to hail impact as well as long-lasting and durable