These shelters are typically free-standing but can be attached to an existing structure. We design, engineer and manufacture our shelters with a wide variety of shed or Single slope Roof shelters with a wide variety of durable materials.The roofing material can include standing seam metal, structured polycarbonate, laminated glass, FRP panels, 3″ insulated panels, solid polycarbonate or acrylic, standard shingles and many varieties of textured roofing like Spanish tiles.