They were really good. Any issues we had, they took care of. They made sure everything was good. It was after a storm and all our windows had lost field on them so they did the entire upstairs. We had a bay window replace a regular window so that was most of our cost. They have a lifetime warranty on it. That's why we chose them. As long as we own the house it's insured or covered. If a field breaks, even if a kid throws a ball through the window they replace the window. They are manufactured in Denver, so they're not made like un Minnesota and then transported here so the seals don't break or change the gas inside as it comes across the country and hits high altitude. Well we only had one issue, just where they put the new bay window something wasn't done where it would look really, really good, so they had a craftsman come out and fix the whole thing and the issues we had were gone. They even went to the point of where, on the Bay window where they cut it, because it was custom made in Denver and then brought here, the wood right along the edge where their finish work would go, there were a couple of areas where it was chipped. They actually had new oak cut, the guy steamed it at their office and then came out and installed a new piece over what was there to make it look perfect. They even looked at how I had it stained already, because it's oak, and they let you stain it in any color you would, but they guy actually went to Ace Hardware, bought a new can of stain to match the stain we had on the framing already and he did all the staining to match it and then left me the can. They went out of their way and everyone was nice about it. It wasn't like they argued. It looks perfect. Basically the windows were custom made for each opening. When they said they were going to be here they came and they always called before and said how many minutes it was going to be before they come. And if they were ever running late they would let us know. There was only one guy that we had issue and it was basically, we took care of it, he was working with a partner and he wasn't quite as conscientious so we had to go to the partner and tell him he needed to put more foam in the cracks. And that was what it was it was just putting sealant in there. Considering we had all these different guys working he was the only one who was like that so I'd hate to take away from their overall when it was only this one person. I hope I never have to do windows again but if we had to do them, I mean I felt like if Mike wasn't here I would feel comfortable with them in my house.