Thursday, June 18, 2015

cleaning rock

Hi guys,
did a house today and noticed that a gutter was leaking onto the wall and has left a trail from top to bottom of a grey or black gunk( from the roof to the gutter to wall...roof has dark shingles and gutter was full of a black sand , probably from shingles)

Tried cleaning it with WFP got half the stuff off but not all.

Customer wants it removed if possible but dont know what to use.

PW or a special soap dont know...here is the pic...just zoom on top of front doors on the right side..
http://ift.tt/1esLuwC

Not much info for u guys but any info or lead is appreciated...thx


from Window Cleaning Resource http://ift.tt/1dNjhzJ
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