Adding 16.5" to the end of my deck. It will be in the same direction as the joists so I just need to sister some additional pieces to the end of the joists. The total cantilever will only be 26" and I have read that maximum cantilever for 2x6 joists is 30" so I should be ok in that regard. I just
Sistering is fine, with one exception: if you have deck boards meeting at your crummy joists, those could present problems in the future. But even if you don't, cutting out the old crappy joists and putting new in is just about the same amount of work.
One of my deck joists is cracked at the end of the board where it is attached to the ledger with a joist hangar. The crack is about 8 in long lengthwise. What would be the best method repair? Should I try sistering the joist or just adding a new joist directly next to the cracked one maybe a few
Re: Repairing/Sistering Cantilevered Deck Joist Well- to start, the only way to repair the cantilevers as they exist would be to remove the flooring to the interior to allow you to bring the new joists in to the house by some ration- 3-1 was the old standard.
I raised the deck until the 2×10 rim joists were about 1/4 inch higher than the top of 6×6 deck post, then fastened the 2×6 sister block cleat to the 6×6 deck post with eight 8 of the 5 inch long FastenMaster LedgerLok structural wood screws which have Stronger design shear values than 1/2 inch lags. I drilled 1/8 inch pilot holes
What Is Joist "Sistering"? Sistering a joist simply means attaching more material to the side of the joist. This can mean a new joist of the same size and length is screwed or nailed firmly to the old joist, or it can be a smaller structural member.
I am about to build a deck that has dementions bigger than the size of the lumber. My question is- when for instance the length of the deck is 24 feet and the beams are located at 12 feet and 22 feet with a 2 foot cantilever at what points and how far would you sister the joists and what method of sistering is prefered?
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