Please help me fix my Trex railing deck with aluminum balusters
We had a beautiful deck built 3 years ago. We used Evergrain decking, Trex railing, and deckorators aluminum balusters. About 6 months ago, we noticed the top railings were all bowing. Some of the aluminum balusters were falling out, creating a dangerous situation.
I had a deck guy come out (not the same one who built the deck because now I don't trust him). This guy said underneath the top railing, we have just about an 1 1/2 extra Trex piece that the balusters are screwed into. He thinks it needs to be a 2 by 4 Trex piece to properly hold and not allow the railing to bow.
Do you guys think this is correct? Thanks!