Take into account that there are diverse brands of stone coated steel roofing with variants among them. The stones in DECRA’s stone-coated metallic roofing products are identified as roofing granules. The granules are made from organic stone which was mined in a quarry, then crushed and screened to numerous measurements. https://stonecoatedrooftiles77655.wikibuysell.com/2001849/indicators_on_stone_coated_roof_tiles_you_should_know