Silicone Roof Coatings are a single-component, moisture curing silicone rubber roof coating system designed for use on existing smooth surface and granulated cap sheet, TPO single-ply and PVC single-ply membranes, well-adhered existing acrylic coating, concrete, metal, spray polyurethane foam and various other single-ply membrane roofing systems. Today we have low VOC High Solids Silicones that are more environmentally friendly and comply with the strictest environmental codes of California and other highly sensitive areas which can now benefit from the advantages silicone coatings provide.