Here's some thing to ponder.
Yesterday I talked with our local building insp. We had a nailing / shearwall insp before we covered the walls,,
The question can up about ACQ because on the kit house we are assembing / building CCA plate stock was used , which is still ok to do but he was concerned that it might be ACQ , quick check of the stock lumber stamp confirmed it was CCA , ok that being said more chatting about ACQ lumber.
A few builders here, Whidbey Isl. , have noticed alot of corrision on foundation bolts and the 3"x3" bearing plates being used , the bolts and plates are Hot Dipped Gavl. the type recommended for use with ACQ.
The insp. said he was just at a three day code conference where ACQ lumber and this corrision was informly , I took it , talked about . Seems it might be a problem.
Our short term sollution is going to be to use Cedar or Fir , with a approved barrier , IE Grace / Vycor or 30 # felt between the cement and the plate stock.
At least two other builders are doing this currently , time will tell who is / was right.
I'm not sure what we will do for exterior deck joist and posts that need to be fastened with nails , ?? Maybe stainless steel , not sure . Not sure about ZMAX hangers either ?? Wrap the ACQ with Vycor ?? A lot of time, read $$$, in my thinking , the tape is $$ The labor is $$ guess who pays that ?
Just what I've heard and seen , here on Whidbey. Might be the salt air in combo with the ACQ ????
PEG
Thanks for the info.
I was afraid this story (about galvanized hangers) wasn't "fully out". It seemed like a too simple a fix (double galvanizing) for a problem that got so much early press.
I don't know if it is totally effective, but I have been doing the following:
1. As Simpson hangers are purchased, butter the wood contact surfaces with a thin layer of (PL brand) poly roof sealer. This will cure to the touch overnight.
2. As the connection is made, apply a fresh layer of poly roof sealer to the wood surface itself.
3. If it is a joint that I'm really concerned with, I also stick the nails/screws down into the cartridge nozzle so they will be coated.
This makes a joint that looks water resistant (and sometimes messy).
But I've been getting a bit lazy recently. With your posted info, I will resume the full procedure in hope that it does some good.