We purchased these windows about 11 years ago. We are no longer under warranty. From the very first year we had problems. Some of the double window groups were mulled together at slight angles so they are not cappable of closing squarely and they leak air. After I insisted, the rep. fiddled and messed with the windows for about a half hour and said the window was fine and there was nothing else he could do. I asked if I could send them back and get a replacement. He said no, they were installed. We had a double sliding window group - 4 panels - that wouldn't seal properly at the place were the seal is on both sides. After years of discussing the issue they finally sent a tech out who did the best he could and the air blowing in is tollerable. Our rep. told us to take a circular saw and cut the door about 1/4 inch thinner. Who wouldn't do it and the tech came out and had them build a door slightly thinner so it could seal better. We have had seal breakage in double hungs with and without safety glass, french door panels, and about 9 transome stationary windows. As of this year, we have 3 more transome, and another panel of a double hung that has popped. Weathershield did send a tech out a few times in the first few years of our seals popping and we didn't have to pay the tech. Then a few years later we had to start replacing them ourselves. The transomes aren't so hard. The french doors are pretty tough to get the trim to line up on again. Every year when I wash the outside of the windows in the spring I am caulking the glazing to make sure we have no leaks. The tech that came to fix our initial problems told me to do this. These are definately high maintenance windows. We also have problems with door locks no longer locking, they just turn. We were told they were not covered under the warranty. Our paint had also failed and we have rotting wood on the frames. The paint has cracked everywhere and when I complained I was given a tiny bottle of touch of paint that you apply like nail polish. It was tedious and didn't work. Then when I complained a second time, I got a can of spray paint. It also didn't work. The third time I complained I was told I was no longer under warranty. Now we are not covered for anything and when I consider the cost every year we face to replace just the popped seals, I give up. We have a nice house with gross windows. When people come to visit I always make sure I point out my windows and doors and what is wrong with them. The thing that really threw me the other day, and this is not an endorsement for Anderson, but, I was at my parents. They installed Anderson over 26 years ago and they never painted the trim on the windows. They are just white primed. Those windows look perfect! No rot, no popping. Go figure.