w_tom wrote:
Calcium Chloride was used to break up ice last winter. It
is now inside plywood and causes that wood to constantly
become wet. How does one neutralize or remove CaCl from
construction lumber. Removal, unfortunately is not an
option. Mold or mildew would be the long term adverse
consequence. How is CaCl neutralized?


You're screwed. Calcium chloride is already a neutral salt. *maybe*
you can precipitate it out as calcium carbonate by applying a strong
base, like sodium carbonate or sodium hydroxide, but you will still have
all that chloride.

I would try sodium carbonate to convert the CaCl2 to NaCl (which is less
hygroscopic) and then apply a coat of whitewash and see what that does.
(I don't think it will help much, but it's cheap)

Best regards,
Bob