What is the best way to remove mold from aluminum siding?

Dave Parre
by Dave Parre

My dad had aluminum siding put on his house a few years back. There is a small section (about 3' x 3') that has mold beginning to grow. What's the best way to treat/ remove the mold?

  8 answers
  • Gwen Kurth Gwen Kurth on May 20, 2017

    Dawn dish soap ,water and vinegar.

  • Diana Deiley Diana Deiley on May 21, 2017

    I spray pool chlorine on the siding, rinse, repeat when needed. You can scrub the area with a bristle brush if you think necessary, but let the chlorine work and it will clean the siding for you. Best of luck.

  • Michele Pappagallo Michele Pappagallo on May 23, 2017

    I agree with Diane. Use pool chlorine. Fill a garden pump sprayer with chlorine and water and use it on the area that needs cleaning. After letting it sit, rinse well.

  • Dave Parre Dave Parre on May 23, 2017

    Thank you all ladies for the input. I'll try the chlorine method first. If that doesn't do the trick, I'll fall back on the dawn way. Thank you again.

  • Gre7778393 Gre7778393 on May 26, 2017

    Although I don't have mold on my aluminum siding I do get a lot of bird 'residue' on the house, due to the feeders I have outside my kitchen window. What has worked great for cleaning is a mix of ammonia and water which I scrub on with a scrub brush. Works like a charm!

  • Barbara Gallyot Barbara Gallyot on May 26, 2017

    There is a solution that is available in hardware & garden stores , named Wet & Forget, I was advised to use this, hav'nt tried it as yet, but was told that it works.

  • Cindy Cindy on May 26, 2017

    I agree with these methods to get rid of the mold. But more importantly, you need to find the source so that the mold does not return. After cleaning, I recommend using Kilz products to be applied where the mold was growing. It only takes one cell left behind for the mold to return. Good luck.

  • Redcatcec Redcatcec on Dec 12, 2022

    I agree with all the solutions mentioned, is this area in a shady spot? If so see if t can be altered so the sun's rays can reach it. Typically mold likes dark, moist places to grow.