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P.T. Ledger requirements

P.T. Ledger requirements

P.T. Ledger requirements

(OP)
Does anyone know of a code requirement that requires pressure treated ledgers connected to concrete tilt-up or masonry walls be used to support roof framing?  1997 UBC section 2306.9 appears to allow non-pressure treated wood provided roof is waterproofed.

RE: P.T. Ledger requirements

It is my understanding that the code does not require ledgers to be pressure treated unless they are in contact with "foundation concrete".  I think it is a good idea however for roof ledger to be P.T., particularly if the possibility exists for moisture to wick through the wall.  This is especially a concern at the control joints.  In a lot of tilt-up type buildings however, the roof structure is open and can dry out if the ledger does get wet.

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