So looking into building a pvc chicken run like the one in the pics i was warned by a friend that hers only lasted a year before warping and bending in the summer heat i have no idea how hers was built only that she used 2 inch schedule 40 pipe and didn't paint it. However i have found people saying theirs is still going strong 2 and 6 years later no issues. I planned to use 1 inch but am now undecided as i want something that will last. I live in Tx lots of sun lots of heat though the pen is mostly under a large tree, but is it worth it to even build a pvc pen. If so what size pvc should i use and could i get away with using schedule 40 or will i need to use schedule 80 to make it last i do plan to paint it if i do make it as i read that will also help it to last longer but if it won't last it's just not worth the money.