Mine is half covered in pvc roof panels and half in rolled wire. If I had it to do over I'd cover the whole thing in pvc. And not the clear panels... We used the gray panels and they just take the edge off on the sun. I've planted a few vines to add shade. When we expand we want to use opaque panels on the rest to give them better shade during the hot part of the day. We tried sand and like wood chips better.