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How toStop Decay and Repair Damage

How toStop Decay and Repair Damage

How toStop Decay and Repair Damage

(OP)
  I am a carpenter in S.W. Florida. I inspected a home for repair with a floor that is supported by wood joists on concrete blocks. At the front and back of the house pressure treated decks are attached directly to the house  with no separating membrane nor flashing between the pt deck ledger and the non-pt band joists. One band joist and the end of one joist near the decks have extensive decay. The framing is not old and the rest of the house is in good condition.
  IF THE PLATE AND STUDS ARE UNAFFECTED BY DECAY does anyone know a way to repair this without unattaching the decayed band joist from its strapping and plate. Every joist rests on a block support so I was considering:
      1) Treating the decaying joists with a fungicide
         ( any suggestions -  boric acid?)
      2) Putting blocking between each joist to prevent
         movement.
      3) Sistering in a section of same 2X to the joist.
      4) Removing the decks temporarily and placing a
         metal flashing between the deck ledger and the
         house band joist which would also be inserted
         under the siding.

RE: How toStop Decay and Repair Damage

My first instinct is a SawzAll. Shore up the area as needed, cut all the nails, and remove the damaged joist.


Install a new joist.

Might be overkill or not possible.

RE: How toStop Decay and Repair Damage

(OP)
  I'll have to remove the decks to do the work and then   re-attach them. What type of metal flashing is the best to place between the new band joist I replace and the pt ledger for the deck? There needs to be a moisture barrier between the deck and the house to avert rain from the deck.
Thanks, Mike.

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