I've recently had an elevated driveway laid---there is discoloration in color on it. It has lines of a reddish color horizontally every 3 feet. Contractor said he does not know what caused this but is offering a fix by painting a cement colored coating over the entire 1-car driveway. I'm not sure what this coating would be. My question to you is... is this the way to "fix" a discolored driveway? Will this coating last? What is the name of best coating to use? From what I've been told, there is only a one year waranty on the concrete.

I would appreciate an answer.