Siding spots

Discussion in 'Remodel Forum & Blog' started by Cookie, Jan 26, 2007.

  1. Cookie

    Cookie .

    Oct 7, 2005
    I noticed today that I have black spots on the siding of my addition. Is it possible that it is mold? If, so, does anyone know what to do? What would I use to scrub them off, and keep it away? Thank you.
  2. Cass

    Cass Plumber

    Nov 12, 2005

    Does it look like this? This pic is enlarged. This is shotgun mold.
    Last edited: Jan 27, 2007
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  4. TedL

    TedL New Member

    Sep 17, 2006
    NY Capital District
    And most likely not on the sunny side of the house.

    Wash with a mix intended to remove mildew. Buy it at a big box, or make your own.

    I use this mix, starting with an empty 1 gal jug:
    1 qt laundry leach
    1 cup laundry detergent (liquid mixes easiest)
    1 cup general purpose cleaner (Simple green, Mr Clean, Spic-'N-Span,...whatever but *** NO AMMONIA***)
    warm water to fill the gallon

    I spray on with an ordinary garden sprayer (pump up), and highly recommend using liquids for items 2 & 3 if you intend to do the same, as the powders don't disolve as easily and can clog the screen. Brush as needed before rinsing.
  5. Cookie

    Cookie .

    Oct 7, 2005
    Cass, if that picture is greatly enlarged, then, yep, it does.

    The deck gets a full sun, but, this side of the addition it is sheltered.

    I will try that mixture, once, the weather breaks. Thank you.
  6. Randyj

    Randyj Master Plumber

    Nov 25, 2006
    Possibly bug do...? Sap? Are there cafes in the area where grease in the air might cause these deposits? (If it grows then it's a mold) Be careful using might lighten the color of the siding....
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