We recently installed a TimberTech deck using all-PVC flooring. They use a clip fastening system (non-nail and non-screw)that recommends the floor joists be spaced for 12 inches on center, if diagonal. We built the structure on the diagonal but at 16 inches on center and fastened the floor boards.
We now experience a spring to the boards when we walk on them and a squeeking of the boards when we walk on the deck. The deck is 20 ft. by 35 feet.
We attempted to resolve the problem by placing 2x4 braces diagonally every 10 inches between each of the joists with the edge of the board nailed and glued to the joist and just "kissing" the floorboard so that the floorboard just rests on the support piece. This doesn't appear to be working -- less spring but still squeaking.
Any suggetsions? Desperate to find a solution.