[vivaro 013]

customer of mine has complained about black water marks on his wooden windows frames which are painted white , frames have only been fitted about 6 months now
i clean his windows using wfp systems , i do clean other peoples windows in the same area with no problems. were does black mark come from so i can explain this to him
any help would be appericated

[thewindowcleaner1]

Hi I,ve only come across the problem of black marks on plastic frames and this is normally cause by the rubber seal around the frame (normally as it gets old) But the main reason on new windows normally stems from the fitters as some spray WD40 or other light oil on the fames to make them shine and look pretty, bloody awfull to get off, and if left too long staines the frames.
Hope this helps
Alan

[vivaro 013]

like i said these wooden window frames and glass have only been fitted for 6 months or so could it be
something in paint
something in wood
something in putty
something in the case of soot falling on them from people home fire
only the front of the house has had new frames fitted

[thewindowcleaner1]

Could be any of the above may be worth your time (if its a good customer) to explain that pure water can NOT mark but offer to see if it can be cleaned off with detergentand warm/hot water,
 but if there are coal fires near by this could possible be the cause as the sooty deposits rest on the glass and when it rains are washed  down  they then settle on the bottom of the frame, Your WFP does not do this as once you have washed the window you then rinse the window thus removeing any deposits that you have moved off the glass.