I have a lifetime shed with an extension that i bought 10 years ago. After 10 years in the arizona sun the skylights cracked and rain was coming in. I called and told the service rep what I needed and he asked for my address and said they would ship me 5 skylights at no charge. Three days later I had them and put them in. The rest of the shed is holding up well with no problems, I recommend lifetime sheds anyone who is looking for a shed.