Alliance installs all major roofing systems. We’ll work with you to find the roofing system that best works for your business. We treat every job as if it was our own with no job being too big or too small. Our crews are specialized in the flat roof installation and employed directly by Alliance. We follow all OSHA safety guidelines and village codes. A supervisor is on-site daily to answer any questions you may have and to guarantee the craftsmanship of the crew.