Thanks JeoD. Where they look stained, the facing has kind of chipped/crumbled off. If I pressure washed, should I do anything afterwards to seal them or anything to prevent further deterioration? I thought I read somewhere not to pressure wash brick, but to use a cleaner and spray with a regular hose, not sure if that's true or not.
Last edited by patricko; 03-08-2014 at 12:43 PM.