yes surface cleaner. normal procedure when it comes to pressure washing a driveway.
i have my friend that owns a pool and driveway business here in going to look at it in a couple hrs. but i think it is just holding moisture. i'll let everyone know the outcome.
i am stumped though all the driveways i've cleaned over the years this never happened once before.
I've stripped the cream off of newer concrete before (luckily it was my own!) by using too much pressure w/ my surface cleaner. Are you sure you didn't do this in the spots that are discolored? Any idea when this concrete driveway was poured?
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The fix was to use my wand to blend in the rest of the concrete (PITA), and then I applied a sealer with a bit of tint to it to hide the imperfection in the concrete.
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Roof Cleaning and Pressure Washing in Anne Arundel County, and Howard County, Maryland
That is what it looked liked when they poured the concrete due to humidity. Then it became dirty and blended which probably wasn't that bad.Then you cleaned it and back came the orignal spots. I seen a brand new concrete driveway poured and looked just like that in a brand new development but everybody else were fine.Got before pictures and how long has homeowner been living there,was he there when concrete was put in. Just my two cents and dont dwell on it, you did your job, good job.
Pinto concrete refers to large, irregular- shaped, dark-colored blotches on the surface of concrete flatwork. Sometimes called mottling, it most commonly occurs in residential driveways, patios, sidewalks, and basement floors.
Kim R
-- Edited by Roof Cleaning Bradenton FL 941-822-2454 on Saturday 9th of July 2011 08:33:23 AM