Our clay roof tile symbolizes premium roofing, blending significant sustainability with highest design impact and longevity. The stones in DECRA’s stone-coated steel roofing items are known as roofing granules. The granules are created from purely natural stone which was mined at a quarry, then crushed and screened to numerous measurements. https://griffinopomk.wikitron.com/2002152/the_ultimate_guide_to_stone_coated_roof_tiles