If it is real stucco versus dryvit, roof mix, X-Jet it on. I like sodium metasilicate in a stucco cleaning mix.
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Ken Fenner PA Roof Cleaning Company offering Roof Cleaning Western Delaware County, PA + Main Line including Broomall, Newtown Square, Media, Springfield, Aston, Ardmore, Haverford, Drexel Hill, Aston, Haverford, Ardmore, Villanova, Radnor Roof Cleaning.