I built Menards' landscape block stairs. It's a collection of concrete blocks strategically glued together to make steps. Here's mine http://ift.tt/2gv1f8L the blocks are close together; there's a minimal gap between them, but maybe enough to add a little grout or mortar. Would this be a good idea at least on the step blocks to help keep water out from all the blocks below? If so, what would be a good product? Thanks via /r/DIY http://ift.tt/2gDfPP7
