2 Primers for use on roofs, walls, decks, walkways, balconies, concrete, asphalt, metal and masonry surfaces; industrial sealant coatings for waterproofing and surface hardening for use on roofs, walls, decks, walkways, balconies, concrete, asphalt, metal and masonry surfaces; protective coatings in the nature of exterior surface coatings, all for roofs, walls, decks, walkways, balconies, asphalt, concrete, metal and masonry surfaces