We recently used Dotto for a small job at our home, replacing two bedroom windows and a bathroom window. They were extremely prompt and professional, and did great work. Our estimator, Stuart, was able to help us save money on the project by suggesting Low-E glass, which resulted in an energy credit that brought the overall cost of the project down. He also suggested sliding window versus the casemate windows that we had been considering, which ended up being a better solution for us. The installers arrived on time and did their work quickly. The windows look great.