This was one of the most professional jobs we've had done on our 100 yr old house. Not only was the job done quickly, it was supervised throughout by the owner, Serge Kanev. When we had a slight problem shortly after the installation 4 or 5 years ago, he was back in a flash to fix it. His advice recently on a job was also excellent. We have waited to review the work. We wanted to see how the work stood up to winter and assault by tree mess and we have not been disappointed. There is no leakage and the drainage is perfect.