Anyone have any experience with gazebos with polycarbonate roofs? Wanting to know the expected life (concerned with the panels). I want to make sure the panels are expected to last at least five years. I also live in Indiana (Indianapolis area, so no lake effect snow), and wanted to see know if anyone leaves theirs up in a cold weather climate? I would brush the snow off same day when we get it (very few legitimate multi-inch snow falls a year). Other option is I could go with would be a steel roof, however, I do like the polycarbonate better from a visual standpoint; would be the preferred route if it makes sense from a longevity standpoint.