Any way to lighten or remove these discolored spots from where shutters were? They removed them and the new shitters arent as wide.
I can’t help you but there was a recent thread about some hard to clean brick. I don’t know if it’ll help you or not but here it is.
I used straight 12.5 with no surfactant and left it. It helped a lot. You’re in a slightly different situation but it’s worth a shot
Couple passes with house mix, light agitation with a brush, should come right out.
