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  1. #1
    Member Freshman Undergraduate joshjweddle's Avatar
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    Cleaning old brick

    What chems would you suggest for this building. Strong SH didn't do much. Here's a pic. Thanks!


    grand Boulevard 2.jpg


    Tri-County Window Cleaners
    Ferndale, MI
    248-707-0822

  • #2
    Member Graduate Student Chris Dubbs's Avatar
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    Probably NMD80


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  • #3
    Member Freshman Undergraduate joshjweddle's Avatar
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    Quote Originally Posted by Chris Dubbs View Post
    Probably NMD80


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    Thought that was mainly used for removing mortar smears?


    Tri-County Window Cleaners
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  • #4
    Assistant Deans 7000 PLUS POSTER Doug Rucker's Avatar
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    What strength/% SH did you use?
    Doug Rucker-Call or text 281.883.8470
    http://cleanandgreensolutions.com
    http://cleanandgreensolutions.com/co...ding-cleaning/

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  • #5
    Member Freshman Undergraduate joshjweddle's Avatar
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    Quote Originally Posted by Doug Rucker View Post
    What strength/% SH did you use?
    I had some 8.5% ran through open x-jet.


    Tri-County Window Cleaners
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  • #6
    Assistant Deans 7000 PLUS POSTER Doug Rucker's Avatar
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    Did it change color at all?

    https://www.cleanandgreensolutions.com
    Doug Rucker-Call or text 281.883.8470
    http://cleanandgreensolutions.com
    http://cleanandgreensolutions.com/co...ding-cleaning/

    The views I express on this website are those of mine alone and do
    not necessarily reflect the views of
    any other person, company or organization


  • #7
    Member Freshman Undergraduate joshjweddle's Avatar
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    Quote Originally Posted by Doug Rucker View Post
    Did it change color at all?

    https://www.cleanandgreensolutions.com
    1st floor stuff might have lightened up a touch. Not enough to sell them on imho.


    Tri-County Window Cleaners
    Ferndale, MI
    248-707-0822

  • #8
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    Have you tried the 8.5% at nearly full strength? True 8.5% is about the weakest we would want to be using however, it will kill algae if the stains are algae. Is it possible that the stains are mineral leaching??? Notice, the bad staining is directly below window ledges...

    Mike
    Michael Heward
    Coastal Cleaning Service (Pressure Washing, Roof and Window Cleaning)
    Serving Central and Southern Anne Arundel CO.
    Millersville,Md.21108
    www.coastalcleaningmd.com

  • #9
    Member Honorary Professor Kiloman's Avatar
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    Sandblast
    Hal Brown
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    ABV Pressure Washing
    336 736 0008
    Sophia Nc
    http:www.AbvPressureWashing.com

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