What do you mean by "damaged"? Since good quality heart redwood
doesn't rot, you may have dried and split boards from the effects of
sun and rain. Some cracks may be fixed by using a mixture of epoxy and
redwood sawdust to fill-in. If the siding is unpainted redwood, these
would certainly be more challenging though. The other thing to
consider is that the thicker 3/4" siding would be nicer than the 1/2"
for durability if the lumber quality is otherwise the same. 1/2" is
pretty thin for a 10 inch wide board.


Dust Boy wrote:
I have 1/2 x 10 inch plain bevel redwood siding on my home. I need to
replace some damaged boards, but can only find 3/4" siding. Anyone
have ideas about building a jig for a planer or jointer to bring the
thickness down to 1/2 inch? What I'm puzzled over is the thin edge of
the bevel is quite fragile and can split if handled roughly. Thought
I'd start with the experts. Any ideas would be helpful.
Mike in Oregon