I washed a roof Monday and my spotter did not rinse the bleach off the colored cement. . It dried up with the sun and there are spots that are white. Any idea how to remove it. I tried pressure washing the cement but nothing.
I took a course on stamped concrete, it sounds like you burn the gloss coating off in the areas where it dried.
Find a place that sell gloss coating for concrete (stamped concrete) don't use gloss poly from a paint department, call someone that sells concrete. tell them what you need it for.
Maybe you have a stamped concrete outlet in your area. it's a high gloss sealer for concrete.