I was wondering if anyone has washed a painted concrete pool apron? I have a customer who had painted their pool apron a Teracotta color. After they removed the pools cover they have normal run off and debris staining. They want me to wash it. I am worried that the heat will lift the paint. Does anyone have any advice for this type of job? I assume cold water is best to start off (I do have hot as well) and I would be using a surface cleaner for the job.

Thank you in advance,
Pete