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  1. #1
    Member Junior Undergraduate MIKE FP's Avatar
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    power washing stucco

    when i refer to stucco i dont mean the stucco from years ago, i mean the new stucco with the styrofoam behind it. it seems where i live its being put on a lot of buildings and houses. it gets dirty very fast and seems to be extremely hard to clean. i have tried all sorts of soaps, etc, but the stucco seems to remain stained. is there anything that may work that i might not have tried already?

  2. #2
    Member Sophomore Undergraduate RandyL's Avatar
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    I would love to get some insight on this as well. We have alot of efis popping up around here too. My main problem area's have been where hornet or wasp nests were attached to it previously. But one thing I do know is you don't want to use much if any pressure on it, cause it will streak bad, and possibly even break through on it also.

    I was thinking about trying a foamer on it to get some better cling time, and to help it get in the nooks and cranny's but not sure if that will help to much.
    Randy Lucore
    Affordable Pressure Washing
    Cedar Rapids, Iowa
    apwcr@mchsi.com
    319-431-8773

  3. #3
    Member Honorary Professor PowerWash Pros's Avatar
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    Stucco = Pain the the A**
    Espicaially if it is "Dryvit" - you can barely even touch this stuff and it falls off.

  4. #4
    Member Junior Undergraduate MIKE FP's Avatar
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    Quote Originally Posted by RandyL View Post
    I would love to get some insight on this as well. We have alot of efis popping up around here too. My main problem area's have been where hornet or wasp nests were attached to it previously. But one thing I do know is you don't want to use much if any pressure on it, cause it will streak bad, and possibly even break through on it also.

    I was thinking about trying a foamer on it to get some better cling time, and to help it get in the nooks and cranny's but not sure if that will help to much.
    what do you use on the stucco siding as far as soaps,etc.?

  5. #5
    Member Graduate Student pressurepros's Avatar
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    The key is a higher sodium hypochlorite concentration along with a synergistic house cleaning soap (Not dish liquid). It should contain sodium metasilicate and TSP

  6. #6
    Member Junior Undergraduate MIKE FP's Avatar
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    im going to try and stay away from the stucco jobs. but as i have said, a lot of people are putting it on ther houses & businesses.

  7. #7
    Member Senior Undergraduate BrooksPW's Avatar
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    Quote Originally Posted by pressurepros View Post
    The key is a higher sodium hypochlorite concentration along with a synergistic house cleaning soap (Not dish liquid). It should contain sodium metasilicate and TSP
    I agree, stucco is easy.. downstreaming just SH and water works good also, dilute it. to much will cause the paint to streak. always becareful around those window boarders if your using any high pressure.. i once hit one while doing a pourch.. wasn't pretty, looked like it snowed.
    Kasey Brooks
    Brooks Pressure Washing, LLC
    Non Pressure Roof Cleaning
    Spring Hill, FL
    www.brookspressurewashing.com
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    352-442-6538

  8. #8
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    I've done a fair amount of stucco. Friday I will be doing another stucco, Dryvit, front with vinyl sides. I use Power House from Sun Brite supply and 12.5% SH. If it has never been painted be sure to pre wet the surface before applying chems. Some of the ones I have done were pretty moldy and they have all come clean. Don't use more than 600 psi or you can damage it.
    Doug Dahlke
    Square One Power Washing & Painting
    Newnan, Georgia
    www.4squareone.com
    770-362-6230

  9. #9
    Member Sophomore Undergraduate RandyL's Avatar
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    seeing this it just popped in my head a question I should ask. I just got hired to do some work for a Ruby Tuesday's here in town in a week or so. And I am doing their dumpster pad. They have a door going into the restaurant that is up a couple stairs. And from the door there are big streaks of grease and mold growing on them running under the door on the stucco, then onto the ground. What kind or detergent should I use on the stucco for best results. I figured I would use some f-18 on the ground but not sure that would be what to use on the stucco.
    Randy Lucore
    Affordable Pressure Washing
    Cedar Rapids, Iowa
    apwcr@mchsi.com
    319-431-8773

  10. #10
    JL Pressure Washing 3000 PLUS POSTER jlpressure's Avatar
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    Quote Originally Posted by pressurepros View Post
    The key is a higher sodium hypochlorite concentration along with a synergistic house cleaning soap (Not dish liquid). It should contain sodium metasilicate and TSP
    I agree with Ken. i use dish soap on many surfaces but not on Dryvit. I use Simple Cherry now and I go a little stronger with it. I used to use RPC Citra Clean its a very good product for Dryvit. I find it easy now to work on Dryvit, but I use extra care for sure. There are some stains that need several applications sometime or some soft brush, brushing. I hate dirt daubbers (sp) because you always cant get that last little bit off

  11. #11
    Commercial Pressure Wash Expert Power Wash & SoftWash Specialist Former PWI Administrator 15000 PLUS POSTER Russ Spence's Avatar
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    Ken is right on the money we have done many hotels that are drivit and they are super easy , spray chem and rinse but dont do it when its real hot , and do it in sections soit wont dry with chems on it , ..... very bad !

  12. #12
    Member Junior Undergraduate
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    Hey Ken...good on you. We tried to clean a strip mall a couple of years ago, (drivit)and brought in a local cem supplier, none of his "stuff" would move it. Told the owner he (and us) would not be happy with the results, and to wait till painting time to do a good surface clean,so we bailed. A year latter he called ,and we got the cleaning job plus the painting contract. Go figure. Dan Cosgrove
    GEEZER
    WALNUT CREEK CA
    maintenancebiz@sbcglobal.net

  13. #13
    Member Junior Undergraduate MIKE FP's Avatar
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    I Did A Car Dealer That Was Located On A Main Road Made Of Drivit, It Came A Lot Cleaner Than What It Was But My Own Feeling Is That It Would Have Been Impossible To Get It 100%. They Were Very Happy With The Work.

  14. #14
    JL Pressure Washing 3000 PLUS POSTER jlpressure's Avatar
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    Quote Originally Posted by DAN COSGROVE View Post
    Hey Ken...good on you. We tried to clean a strip mall a couple of years ago, (drivit)and brought in a local cem supplier, none of his "stuff" would move it. Told the owner he (and us) would not be happy with the results, and to wait till painting time to do a good surface clean,so we bailed. A year latter he called ,and we got the cleaning job plus the painting contract. Go figure. Dan Cosgrove

    Dryvit can be harder than some surfaces, next time get some RPC Citra Clean from Steve Rowlett. I just couldnt tell someone wait until he has to be painted. I would rather tell them if he has us clean it every year he wont have to paint as often. Tell them you may not be able to remove all of it possibly but it will be a lot better

    There are areas that can be tougher than others. Likke rounded edges where you get run off, sometimes you'll see black streak, the most We've had to do is some soft brushing and apply again and rinse. You just got to price the extra work in.

    Now I have seen a couple buildings with dryvit that were neglected for several years and the mold actually ate away at the surface of the dryvit

  15. #15
    JL Pressure Washing 3000 PLUS POSTER jlpressure's Avatar
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    Quote Originally Posted by MIKE FP View Post
    im going to try and stay away from the stucco jobs. but as i have said, a lot of people are putting it on ther houses & businesses.
    Man dont pass on it, jut learn how to do it, theres not that much more to it, than a good chem , maybe a little brushing and then your the Dryvit cleaning king lol

  16. #16
    Member Junior Undergraduate MIKE FP's Avatar
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    Quote Originally Posted by jlpressure View Post
    Man dont pass on it, jut learn how to do it, theres not that much more to it, than a good chem , maybe a little brushing and then your the Dryvit cleaning king lol
    it just gets frustrating not being able to get it all off.

  17. #17
    Member Junior Undergraduate
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    Serious stuff.

    Dan Cosgrove
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