Mark in Toronto

replaces all my windows using Brock... Brock chose to use North Star. triple pane krypton gas... all windows performed worse that the originals I had. can still feel draft coming off all windows, but worse than original. Patio Door is horrible. after 1st winter and seeing frost buildup inside at bottom of patio door and living with draft coming off the window Brock sent North Star who said it was installed incorrectly... this did nothing... installer from brock came back(in summer) and "re-levelled" the patio door... waste of time... cant test it until winter... second winter that past... still drafty... more so after the re-levelling. after second winter Brock sent regional manager to look... he said they would send their "best" guy...load of crap... new guy came in summer took off caulking and re-caulked and also re-levelled... even worse air leaks and cold radiating off the window feels like there is nothing there. I am sitting 7 feet from the window right now and can feel a cold draft. in short... do not waste your money on either North Star or Brock