I have a composite deck (Fiberon boards with a Trex Designer railing system). The guy that built the deck didn't install any of the crush/foot blocks and now the railings are sagging. He's no longer in business, so now I need to try and fix this myself. I found a place online https://www.diyhomecenter.com/trex/transcend-railing-adjustable-footblock.aspx that sells the adjustible foot block, but I don't know if that'd do me any good. How can I install the footblocks now that the deck railing are already in place?

EDIT: This isn't my railing, but it's basically the same problem

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Should be pretty simple. You just need a way to gently raise the railing up enough to get the block underneath. I would do this slowly over a number of days and raise it the absolute minimum amount. Once you get there, slide the block underneath, slowly remove the support, and you're done.

  • I was planning on just using a car jack. Does it really need to be that slow? How do you secure the blocks to the railing? I'd assume that the downward pressure would be enough to keep them from blowing away, etc, but how do you prevent them from spinning / accidentally getting kicked or power washed? – 2 Left Thumbs Jun 8 '15 at 0:55
  • 1
    @2LeftThumbs They sagged over time - shoving them back quick can crack them. Doubled wedges are a good method. – Ecnerwal Jun 8 '15 at 1:55

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