Understand that there are different makes of stone coated steel roofing with versions amongst them. The stones in DECRA’s stone-coated steel roofing products are referred to as roofing granules. The granules are produced from natural stone which was mined at a quarry, then crushed and screened to numerous sizes. Slate https://stone-coated-roof-tiles61471.tkzblog.com/35079977/stone-coated-roof-tiles-fundamentals-explained