Steve A.
They don't stand by their warranty.
Purchased a three season sunroom over a decade ago and have been happy with it. However, both skylights began to leak. I was happy to see that all glass was covered by a lifetime guarantee against leakage "at no cost to you". Well that's not worth the paper it's written on. They wanted almost $1,000 just to come out and evaluate the problem. Their excuse was that labor isn't covered. I guess "at no cost to you" means something different to them. BTW Patio Enclosures was bought out by Great Day Home Improvements. Maybe that's the problem.