Vinyl Fence on Deck – How to stabilize or strength the Post Support

anchordeckfence

I have a 14' long fence on top of my composite deck. In the wind, it sways quite a bit and is very noisy. The fencing seems to catch the wind like a parachute. The furthest post doesn't move much as that is attached to the deck railing, however the 1st post (closest to house) and center post do not seem to be as stable thus causing the swaying.

I'm trying to come up with ideas to somehow anchor these 2 posts better or somehow maybe add some weight to the posts so they are more stable in the wind. Right now the posts have 4×4's in them that are secured to the deck using Titan post anchors. https://www.thedeckstoreonline.com/tisan-post-anchors.html

Does anyone have any ideas on how to prevent this?

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Best Answer

The most appealing option would be to remove the 4x4s and buy ones that are a bit longer. Cut a 3 1/2"x3 1/2" hole in the decking and create an assembly similar to one in the image below.

You could also use the same posts but shorten the height of the fence by cutting the white material and dropping the 4x4s below the deck as previously mentioned.

enter image description here http://embed.widencdn.net/pdf/plus/ssttoolbox/zqzekua0ld/F-DECKCODE20-p029-032.pdf