What are the most effective solutions for repairing a commercial roof leaking issue?

The most effective solutions for repairing a commercial roof leaking issue include identifying the source of the leak, repairing any damaged areas or seals, applying a waterproof coating or membrane, and conducting regular maintenance to prevent future leaks. It is important to consult with a professional roofing contractor to assess the extent of the damage and determine the best course of action for repair.