I'm having a 6' split-face block retaining wall built in my back yard. It's finished - grouted solid - except for the backfill.
The contractor is about to backfill it on Monday and a friend said if he doesn't seal the back of the wall, we'll be sorry. My friend says that water will seep through the wall and mess up the face. The contractor says it won't. It's NOT going to be stucco, so even if water seeps through, is that so bad? Who is right?