On Oct 8, 6:54*pm, ransley wrote:
On Oct 8, 6:21*pm, wrote:

I have a retaining wall outside that I've been modifying lately, it's
about 50' long and 3' high. Currently it's constructed out of just old
pressure treated 2x12. I would like to build a faux rock wall. I think
that would look much better. My questions are, is faux rock the
correct term? Second, what do I use for backing? Can I mortar the rock
to the pressure treated wood then grout? Any good websites where I can
find more info? I Googled faux rock, but didn't come up with too much.

What will last is a separate stone wall not with mortar but stacked,
retaining walls move and breath.

Hi guys and thanks for the replies. Thinking about it, duh, for me. I
can't mortar rock onto wood...I should have known that...I just tiled
my whole bathroom. If I use cement board, should I trowel on Redguard
first? Also, once everything is done and grouted should I seal it?

I don't want to make too big of a project out of this. Next in line
would be to just put up composite wood.