Kotty Siding and Windows has made me a very happy man. This has been their 3rd trip here. First trip 4 windows, 2nd trip 4 more windows and this last trip replacing the real problem window in the upstairs gable. Dale's i staller Eddie is second to none. All of the installs were much much better than I had imagined. So happy and so relieved. Excited to see a difference in my heat bills too. I highly recommend Kotty Siding and Windows.