PipeDown wrote:
I want to build a simple bench for a custom shower. I priced out Teak and
found it to be very expensive and the stock more limited than other species
(at that lumber yard at least).

What else is new, but you don't need that much for a bench

I found African Mahogany and Philippine Mahogany at a reasonable price (1/3
of Teak).

Pure garbage, the only real mahogany is Honduras mahogany and i would
not use it for this application.

Are these woods acceptable substitutes for Teak in a steamy wet
environment.

IMHO, NO!

What other species can you recommend.

You could use sinker cypress, but you may not consider it low cost either.

Leave either the teak or the cypress natural, they need no finish.

Lew