How does one raise a porch roof/columns to replace decking?
Four large posts in the front...Porch is 24'wide...14'deep...
Left post has shifted 1.5" and resulted in the 2nd and third post shifting also...Period home...columns are 14 feet...porch ceiling is 15.5"
Those are some tall columns. if you have the time where you can remove one at a time replacing the decking as you go Here is a suggestion. buy a hi lift jack. These are available at most farm stores and some of the DIY outlets. also buy a length of steel plumbing pipe that will just fit over the jack. you may also have to buy a coupling and a short piece of additional pipe in the same diameter. most places sell in 10 foot lengths.
about a foot from the bottom of the column you plan to work on place a 2 foot long piece of 6x6 as a pad. be sure that it extends past two adjacent joists and runs along and over the top of the rim joist. Be sure that the rim joist and the floor joists are supported snuggly(use wedges and tap don't drive them in too tight.) with the jack all the way down set on to of your 6x6 and the pipe over the upright cut the overall length to be about 6" short. locate your jack on top of the 6x6 pad and on top of the pipe place a piece of 2x6 across the fascia boards. (many times the bottom board covers an empty space and if you try to support off this it will split or just push up. you will need to find a structurally secure position for the top to bear against.) Gently jack up the roof one click at a time. do not just kick out the column you WILL be surprised at how heavy they can be. when you have raised it enough carefully pry the top loose and cut or remove the fasteners so the top is free. moving the top around often it can be determined where the fasteners for the bottom are so that they can be removed. once free the post can be moved over a bit and the deck replaced. then just move the post back on to the new decking and move to the next post. saves laying them down or dropping them and other possibility's for damage.
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