Hospitals, in particular, employ large amounts of solid surface for sinks, showers, nursing stations and wall cladding, because its seamless properties eliminate gaps and crevices that harbor harmful bacteria. Manufacture. Solid surface is manufactured by mixing acrylic, epoxide or polyester resin with powdered bauxite filler and pigments. The ... Bathroom Surface Solutions delivers high-quality workmanship and uses todays top-of-the-line materials. Specialized in the refinish of porcelain and fiberglass bathtubs, sinks, tiles, showers and countertops.