Quote:
Originally Posted by dad911
1) I would replace the ledger fastened to the house. Looks like it was nailed (not to code) and nails are rusting. Wouldn't surprise me if there is damage behind the ledger. Use ledger locks or equivalent, rated for PT.
2) Aluminum is NOT to be used against PT lumber, it will corrode.
3) 2x6 is small for a joist. what is the span (distance between ledger and girder) and does it overhang the girder?
So I would use rubber stick-on flashing behind the new ledger, and on top of the new ledger to protect the aluminum flashing. As to the gap, I would just fill gap on top of the new decking with pvc trim board ripped to fit.
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The ledger is just nailed in the picture I took, there are lag bolts on each side of the existing joists, however, NONE of the original hardware was galvanized or hot dipped which is a big part of all the failures. I replaced several pieces of the ledger that were questionable and will be replacing all lag bolts with LedgerLok screws. I used their structural screws in the main beams along with galvanized bolts/nuts. I put Grace Vycor flashing behind all of the ledger which actually did have some minimal amount of thin flashing but I replaced it because it was thin and didn't seem waterproof.
All of the joists are 2x8x12 PT and they will span 10' to the main beam then overhang 18". The original deck overhung 3' but they used 2x8x10 to the main beam, then sistered another 2x8x6 for the overhang. I choose to remove the sister and lose the extra 18", deck is already big enough and I didn't want to sister more joists.
I will try and take some pictures to give everyone a better idea of the whole thing.