Outdoor Cedar Finish - Weathered / Mold and Mildew Resistant
I have a new cedar railing on a deck and had intended to treat it with zinc napthenate to get a silvery finish that also discourages mold, etc. But it seems that zinc napthenate has gone the way of DDT, etc. and nobody sells it any more. Well, one can presumably buy a kg. of the powder/crystal form but at $650/kg that seems unlikely to happen. What I'd figured to be good would be 6-8% solution (but in what solvent??). Probably moot.
So, I'm looking for something else.
I find Cabot bleaching oil that promises a similar finish but it's based on linseed oil. Linseed oil is food for mold.
I'm stuck on what I might use that's not linseed oil based (to avoid mold/mildew in a damp coastal location) and will get a gray/silver result and avoid much maintenance.
I'd appreciate suggestions!