As a Realtor, I have used Roof Md for years to inspect and certify the leak integrity of roof on the homes I sell. They offer free inspections, usually within a day or two, and have repeatedly saved my clients from purchasing a home with an end-of-life roof. Without them, we rely on the statements of the seller, which is often times exaggerated, or the comments from a roofing contractor who may overstate the need for a new roof in order to generate business. Roof Md is not in business to replace roofs. They only inspect and do the repairs needed to enable certification. Theirs is a unique service. In the 15 or 20 years I have used them, I have never had an issue with their backing of their certification.