On Thu, 29 Apr 2021 21:03:48 -0700 (PDT), Class Act Rain Gutters
wrote:

On Saturday, February 14, 2009 at 6:28:27 AM UTC-6, Chuck wrote:
Nova wrote:
Chuck wrote:
Has anyone heard that I can't use galvanized nails with cedar wood.
Someone has suggested that I will get some sort of chemical reaction.
This will be used on the outside of my house with a good coat of latex
paint covering it. Tks. Chuck

Hot dipped galvanized nails should be okay. See:

http://www.soundcedar.com/lumber/sid...tion/nails.php

Thank you. The siding that I am replacing has galvanized nails and I see no sign
of stain. The siding was installed in 1972. I will go with galvanized. Now to
see if I can use a nail gun.

Back in the 70s they used a different type of galvanization. But the galvanization formula used today causes the reaction.
I am certain hot dipped nails will, but am uncertain about electroplated nails.

Hot dipped galvanized shouldn't be an issue for cedar. They are
frowned on for outdoor use today because the chemistry used in modern
pressure treated lumber will defeat galvanizing of any kind thanks to
the EPA saving us from ourselves.