My 1968 ranch home is built on a slab. The bottom row of cinder blocks
is half below soil (heavy, slow draining) level. The mortar between the
blocks is deteriorating, and as I gouge it out it's wet even as far in
as one inch from the exposed exterior face of the block.
After repointing the joints, should I paint them with some kind of true
waterproofing stuff? If so, what do you suggest using?