Personally, I am extremely dissatisfied with Supreme windows. Our home is 5 years old. The first 3 winters the windows seemed great. In fact, I was extremely impressed that there was absolutely no condensation at even -30 C. Then last winter, at even -10 C I noticed some condensation on all the windows. At -25 like it is now, there is an inch of ice along the bottom of all of them.
I called Supreme last winter and the service depths extremely rude. I was basically told there is nothing wrong with the windows and the humidity is too high in my house. When I asked what it should be, they could not provide an answer. Here's the thing - the humidity is exactly the same as the first 3 winters. I know this because I have been watching it very closely. We have extensive amount of hardwood flooring on our main floor and the hardwood manufacturer requires an minimum of 30% to avoid cracking. The crappy little humidifier on the furnace can't get it much above 23 or 24%. I have the exact same furnace, humidifier and humidity meter and its always been between 21 and 23%. There is no way there should be condensation and -10 C outside with 23% hum its inside, unless the windows have virtually no insulating value.
I really have no idea what has gone wrong with these windows. I do know Supreme has no interest in helping me.
I will never buy any product from Supreme again!
