"Ultimately, any engineer that calls me is going to receive my whole hearted endorsement of NIR. On and off leaks have plagued Chicago Explorers Academy. Different roofing contractors were asked to inspect the roof for potential problems. ONLY NIR took the time to find EVERY problem. He gave us his word and in writing that the roof would not leak. There has not been a single drop of water since he was here. Peace of mind is what he is providing for this engineer. Thank you Jason and NIR!"