Customer called me to price cleaning and sealing his limestone. The river overflowed with waves to the top of the 2nd floor door. he doesn't want it shiny, just sealed. So I have a sample piece to do for him.

The limestone is still drying out. My question is "Should I expect to clean each section twice since the water stayed on the limestone for 2-3 days." And, probably some of the silt or dirty water from the water has gotten into the pores of the limestone. What is the long term effect of that?

Thank you for your time.