Hi all,
My front deck is sagging noticeably in the middle. The deck itself is approx. 4' x 16', and is used only as an entrance/exit (no BBQ, furniture, etc.). The deck surface is about 1.5' (avg) above ground level.
There are support 4x4's running vertically at each end of the deck, and one support in the middle. The supports extend just over 8' to a roof overhang above. It is clearly noticeable that the middle 'support' post is not even touching the underside of the overhang anymore....based on this, it looks like the middle portion of the deck has sagged about 1".
Also, at ground level, it looks like the post simply terminates at the ground, with no concrete or blocking of any kind. I presume the best solution is to jack up the deck in the middle, place a pre-formed concrete block/slab (or even PT wood) beneath the 4x4, and simply remove the jack.
However, any suggestions on what type of jack to use, or any alternative method would be greatly appreciated. I should mention that because it is a front deck, the 4x4 support posts are shrouded with 1x4 running horizontally (to hide the underside of the deck). This could make access difficult; I expect that I would have to remove one or more of these planks first.
Cheers, Dave