Commercial Buildings ServicesTCSI provides a full range of new roof and roof replacement services for commercial buildings, including: New Construction Furnish and install roofing systems for new construction. Preventative Maintenance Quarterly preventative maintenance projects including gutter cleansing, roof drain cleansing, roof cleaning, and patching broken lapse and membranes. Leak Repair Patching and repairing existing roof systems. Re Roofing Furnish and install new roof systems for existing buildings; coatings and sealants on existing buildings; preventative maintenance programs for existing buildings. Miscellaneous Miscellaneous small construction projects including interior or exterior painting, installation of flooring, drywall installation, and drop ceiling installation. Request an Estimate