The vertical stamp system is a decorative concrete system created specifically for vertical stamping. Virtually any vertical surface, inside or out, is a good candidate for this application. This special cement (one third the weight of a conventional cement) can be applied directly over primed drywall, wood, masonry, brick , existing concrete or any other vertical surface. This product is specially formulated to go on thick so you can create various rock textures and other available designs. Our vertical stamp concrete is also fire resistant, weather resistant and waterproof.