0

This question is an exact duplicate of:

Old concrete patio -- shedding maple trees stain the concrete. Powerwashing not remedying. What application would render the best appearance?

marked as duplicate by ThreePhaseEel, Tester101 Jun 20 '17 at 11:39

This question was marked as an exact duplicate of an existing question.

0

Acid etching. You have a few options here. Phosphoric Acid or Muriatic Acid

0

After cleaning the patio, apply a stain so that present and further staining from leaves doesn't show.

Not the answer you're looking for? Browse other questions tagged or ask your own question.