went to look at a job today. The flag stone around the pool has no sealer on it anymore, and now the stone has begun to flake and chip off. It is pitted pretty bad in some areas. There is also dirt and white stains on the stones as well. (calcium build i guess). Has anyone else seen something like this, how do you go about handling it? Real soft wash then a good sealer?? I would love to help this guy out, and get more business in the area. But if this kind of job is too advanced for my level of profession, then i really dont want to attemp on someone elses property.