My 6 x 8 is going on 4 years with no problems. I was late to the HFGH party though and think there are others here that have had them much longer.

Have had my 6X8 for almost 7 yrs. No problems. I have 2- 10X12's. One is about 5yrs old and the other is about 2 or 3 yrs old. No problems. The 2 10X12's are hooked together back to back to make one . Have doors on both ends that way. don't have to walk all the way around them to get to the other 2 greenhouse that I have. Yes I'm GH happy but at lease I'm happy.

Thanks for the input. Do yall have them in full sun all day, or are they shaded?

Well if Florida sun isn't hot and destroys thing, I don't know what does. I have 50% Aluminet over the top. I take out 8 side panels in the summer and put in the aluminet screens that I made. It really helps with the heat in the summer.

I have had mine for 4 years. I have mine in full sun covered in shade cloth. I keep orchids in it and plumerias are stored in the winter. I have had no problems yet.