Krystol™ Baricote (K-315) Water Barrier for Concrete or Brick. Krystol™ Baricote is a fast-setting waterproof grout that is specially designed to repair leaking cracks, holes and joints in concrete as outlined in Technical Bulletins 101 & 102. Krystol™ Baricote contains special ingredients that react chemically with concrete to form millions of needle shaped hydration crystals. These crystals grow deep into the capillary pores of the grout and surrounding concrete to block the passage of water. Sold by the pail.