Can a power washer restore your siding?

  7 answers
  • Lynn Lynn on Jan 04, 2019

    It depends on what you mean by restore. Is your siding vinyl or aluminum? We power wash our vinyl every couple years and really does a nice job cleaning it. But yo do want to be careful not to intentionally direct the spray up underneath the pieces of siding. Not good to get it too wet underneath and it can also dislodge pieces if spray is too strong. If siding is older, aluminum and or painted, the power of the sprayer can peel off paint, or pitt the aluminum siding. Just follow directions on your sprayer as to the setting for siding, and as long as it's vinyl, you should be ok. But, this is to clean...not sure what you're looking to achieve by restoring. Maybe you can explain this part more...

  • Cindy Cindy on Jan 04, 2019

    Hi Diane. I'm Cindy. If your siding is in good condition, other than being dirty, yes power washing it will restore it.

  • Be very careful!! A power washer is very powerful and can easily wreck your siding. It can also force water up and behind the siding and leak into your home. Washing siding can be done successfully with a power washer, but you must use it with extreme care.

  • K K on Jan 05, 2019


    • John Reilly John Reilly on Jan 05, 2019

      AND your reasons would be ?

      a handy man in our town makes a good living spraying cleaning homes - Has a truck with a 1000 gallon tank and adds a good soap - has a heater for the water.

      Only problem is he does not make house calls - you have to take your house to him ---


  • Dana Nutting Dana Nutting on Jan 05, 2019

    Have you tired 30 Second Cleaner?? Works unbelievably and kills Mold spores. Spray on - Rinse off.

  • Oliva Oliva on Jan 05, 2019

    Are you trying to remove algae, artillery fungus, or airborne dust and dirt?

    You can apply Wet n' Forget using a Garden Sprayer (no power washers), liberally to siding on an overcast day. It will take many months, but does work to restore siding from algae stains, even on your roof shingles.

    The artillery fungus will result from mulch being placed within 10 feet of your house. It's best to scrub it using a thick microfiber cloth or sponge dipped into hot water mixed with Lemon Dish liquid. Do NOT use one with grease cutters, as siding manufacturers report damage to siding, over time.

    Airborne dust and dirt should be removed with a garden hose and siding cleaner.

  • Janice Janice on Jan 05, 2019

    Power washing can be used to "clean" the siding, but it's not going to restore anything. Work from the top down and be sure not to have the washer forcing water into the drip holes at the bottom of each layer of siding if there are ones, or you'll end up with the possibility of mold beneath the siding. You might first try cleaning the siding with a soft brush with an extender on it and use hot soapy water and then rinse well. It may take longer but if you do it in sections it might be best for the life of your home. It really does depend on the type of siding you have on your home.