Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Roland S on April 10, 2013, 09:06:13 pm

Title: need to clean algae off flat roof without damaging lead work?
Post by: Roland S on April 10, 2013, 09:06:13 pm

hi

i've got to clean a painted (concrete?) flat roof that's covered in various types of algae and lichen as well as very dirty. i would attack it with some sodium hypochlorite but the roof is surrounded by some fancy ornate leadwork and i think i read somewhere that sodium hypochlorite and lead don't like each other? whatever chemical i use will  come into contact with the lead anyone got any suggestions on what would be safe to use virasol, g101, hypo? as it's going to need something more than just water.

any advice appreciated

Title: Re: need to clean algae off flat roof without damaging lead work?
Post by: stuart mc on April 10, 2013, 09:12:57 pm

each to there own, but I would swerve that one and tell them I am a window cleaner, not much help sorry