South Texas Interiors. Also known AS STI is a general contracting firm that serves customers in central texas. Operational for more than 10 years. The firm specializes in interior construction services. It offers tenant finishing services for offices. Industrial buildings. Medical facilities and retail stores. South Texas Interiors provides the construction of sensitive compartmented information facilities for defense contractors. The firm also builds hyperbaric chambers for the medical industry. It offers construction and renovation services for schools and public facilities. The firm additionally provides demolition. Metal stud framing. Drywall construction. Ceiling installation and general carpentry services. South Texas Interiors is located in SAN antonio.