Answer: It’s always a good idea to know the P.H. of the slab you are working on. It would definitely help to know, if the project includes any kind of color, sealer, or coating, as these can have adverse chemical reaction with the slab. Concrete tends to run high on the P.H. scale, and many coatings adhesion rates can be adversely affected by a high P.H. slab. There are chemical neutralizers available to lower the P.H.

 

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