How do I get green hunk off of my deck?

It is covered, but where the rain blows in and Sun doesn't hit it, it's green.

  4 answers
  • Sharon Sharon on Jun 17, 2018
    That is algae, and a good power washing should take it off.

  • Sharon Sharon on Jun 17, 2018
    And I would follow up with a good sealer. Hope this helps.

  • Landsharkinnc Landsharkinnc on Jun 17, 2018
    Algae --- pressure wash with an algicide - available at home improvement centers

  • Charlotte Charlotte on Jun 18, 2018
    Depending on your porch type(wood, stone, etc) and if there's any stain to be damaged, I'd suggest a dish soap and water mixture. I have a concrete porch, and typical vinyl siding, and have used this with great results. I get that gunk on my siding. Using that mix and a scrub brush takes it right off!