I am the maintenance department at our local courthouse and the County Commissioners would like me to find a solution to an age-old problem and I haven't got a clue as to what to do. The old limestone foundation walls in the basement flake off bits and pieces as well as dust and sometimes even chunks. The deterioration of the walls I believe is a result of poor water drainage away from building over the years. It seems that the water problem has been solved, but it has taken it's toll on the walls. The tile floors are now refinished and I would like to keep them looking good. They have had some of the walls painted with some kind of (epoxy paint ?) but even those have flaked off pieces, paint and all. What can be done to keep this from happening ?