In the 70’’s we lived in Newton PA, above Philly.  The local lumber yard - Frost
Watson - was an East Coast repository of redwood, claiming 2 million board feet
without a knot.  I have trimmed out several rooms in a house we built with
quality redwood.

A friend bought a 1954 ranch house with some classy features.  They did not like
the original redwood panelling, so carefully removed it and are looking to sell
it.  I was able to snag a 36” piece for a guitar top:

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I have also used it on our tall ship for mast tops - platforms at the top of the
large lower masts that were used as sniper locations in the 17th c.

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This is where we learned it is not rot resistant

Ed Minch