I'm almost done building my floating dock and noticed something the other day that concerned me a bit. We have had alot of hot days in Texas and this has made the barrels expand a bit but the other day I noticed in cooler morning temperatures that the air in the barrels had contracted causing the barrels to collapse just a bit. I was wondering if anyone else had experienced this problem and how it affects the flotation of the dock. I have built a 10x10 dock using 14 barrels. Maybe when they are in the water they will maintain a more constant temperature and won't expand and contract with the changing temperatures. Any thoughts??
