I built a deck using Trex close to 20 years ago. Made it 20' wide because I could get 20' lengths of Trex. The Trex is holding up fine. No complaints. No splinters in the kids feet ever. It was easy to work with and I used the Trex spacer tool for the proper gap between boards. Only thing I remember of significance is that one person (me) can't carry a 20' Trex board without dragging some portion behind. It's too flexible. It was a good investment.