There are several reasons for the poor overall review. The largest factors are the poor quality of the finishing work and, I don't throw this term around lightly, incompetence of the workers. I see other good reviews for the company, so I think the main problem is the two workers that installed at our house, not the company in general. The workers who came to our house were Gary and his crew member (Gary did all the talking). They were not punctual, but, again, the main issue I have is the poor quality work. Bryan was the salesperson for this and, overall, Brian was good at getting back to us and trying to get things fixed over the two months in which all of this transpired. The day that Gary came to do the install, he showed up at 7:30AM. They were scheduled for 10AM that day. My wife and I shrugged that off--no reason to be upset as we were already awake and doing breakfast with the kids. The install then proceeded pretty normally while they removed the existing windows. They use a blowtorch method and crow bar to heat up the old aluminum windows. This method does some damage to the flashing around the windows and chews up the drywall where the crow bar is placed. These are small imperfections but I figured that there would be some damage. I think the use of the crow bar was a bit careless, such that the gaps caused were about 1/2 inch along the drywall in places. I shrugged this off also, because some caulk and paint could fix it (although I ended up doing that repair). Our house has vinyl siding. They did not remove the framing of the vinyl siding on the outside. They installed the new windows right up against the outside of the siding, then caulked the windows to the vinyl siding to create a seal. The manufacturer of the windows approves this method of installation, but it does not provide the best watertight seal. The best seal is to remove the framing of the siding, install the window and fill gaps, then reapply the framing. While I am not happy about this installation method, the manufacturer says it okay. Gary and his crew member applied caulk to the siding and window very poorly. There were gaps all along the inside and outside of the window, and the caulk was white on brown trim--applied in such a way that the caulk lines were not straight, and excess was all over parts of the siding (like white finger painting on the siding of my house). All-in-all, they were rushing. The two large windows were installed, but not near level with each other. One window has the top so far out that the siding bulges and the other has the top so inset that the siding caves. Its not a pleasing effect--actually it looks pretty bad. We brought this up to Gary right after the install and he said that it was set against the drywall and couldn't be moved. He refused to do anything about it. If an installer cannot place adjacent windows such that they are plumb and level, then I have doubts about experience (we are not to the "incompetence" part yet, this is simply careless work). We called Bryan the day after this and he sent Juan out to fix the caulking job. Juan was great, actually. When he arrived he made a comment like "Wait, who did this caulking job?" He then proceeded to fill in all the window gaps on the exterior and the interior. Every window needed more caulk. The aesthetics of the caulk were not great (finger painting is hard to get off), but at least it was water tight. Or so we thought. The first rain happened a week after they installed and water began coming in through one of the windows. Juan came out to look at it, applied some clear caulk to the outside where the glass met the window and said that should fix it. I asked if this was a defect in the window from the manufacturer. He basically said her sees this a lot with these windows. That struck me as odd. Why would a brand new window have a leak in it? If this was common from this manufacturer, why would they still be using this brand of window? A week passed, another rain storm, the leak was still there. Juan came back out and applied caulk to the entire window frame this time. It was nice that they were trying to fix the problem, but I was agitated that this brand new window would have a defect in it. No one could figure out the leak over the course of 1.5 months. So Bryan called another company to come out and take a look. That contractor was at the house for about five minutes before he said that the window was installed upside down. The weeping holes were catching water and holding it inside the channel of the window until it came through eventually (like a U-shaped straw held out in the rain, with a small hole on the bottom where collected water comes out). Bryan said Gary and his crew member would be out to fix it. Gary showed up three hours late (I called the office at 1.5 hours late and they called me back to let me know Gary was hung up on another job but would be by the house soon). He showed up 1.5 hours after that--no apology, no phone call. Then the first thing he said was "that window aint upside down. I don't know who told you that but they don't know what they're talking about." At this point, I was pretty aggravated so I said "Maybe the window isn't upside down! Let's take a look!" I then let him point a few things out on the window to me while I nodded. I think he was beginning to think he wouldn't need to do any work on my house. When he finished talking non-sense about how the window was properly installed, I stepped in and told him that the manufacturer diagram had they weeping holes on the bottom of the window, like every other window on the house. He took another look and grudgingly admitted the window was installed upside down. That probably wasn't nice, but I was incredibly angry in the moment by Gary showing up late, going fully defensive on me, not apologizing, etc. I let him dig himself in a hole that I knew he was digging... After this, he proceeded to fix the window with me standing never farther than about 8 feet. They pulled out the window, caused a bit more damage to the drywall, and hammered it back in. The caulking job was, again, "finger paint" but I asked him to clean it and fix it before he left. He did clean up the smudges on the outside and re-caulked the gaps. Maybe the gaps are too large, because there are new interior gaps now. The window was also aesthetically damaged from being pulled out and placed back in. There are lots of dings and scratches--but it is at least water tight now. I will never use this company again and would not recommend them for a house with siding. There might be very capable crews elsewhere in the company, but Gary was about as low quality as they come--rushing-through-it with little care to the overall water seal and no concern about the aesthetic.