Posted by Pete VanderArk (69.208.87.140) on November 02, 2009 at 00:11:58:
The stone walls in the basement under the oldest part of our house - about 100 years old - are not falling down, but the old sandy mortar between them is gradually coming loose. Brushing with cement products is frustrating, because the mortar is so loose. I'd like to find a liquid product I could spray into the joints to soak in, seal, and harden the mortar. Any advice for me?