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Need help - windows won't clean of muck


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Hi,

I've got two customers next to each other down a narrow alley. That alley has had a lot of work done on the concrete floor for the last 10 weeks, very close to my customer's front windows. I haven't cleaned them since before work was being done. Their windows are hydrophobic and the grit/dust from the work has left their windows looking terrible. I can't brush them clean however hard I brush and however much water I use. I told the customers I'll be back to have a go with the squeegee but not sure if that'll do it. I think the grit might have bonded chemically with the glass. Any thoughts/suggestions of what to do would be greatly appreciated.

Many thanks

20210604_161522.jpg

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1 hour ago, Ednic said:

Hi,

I've got two customers next to each other down a narrow alley. That alley has had a lot of work done on the concrete floor for the last 10 weeks, very close to my customer's front windows. I haven't cleaned them since before work was being done. Their windows are hydrophobic and the grit/dust from the work has left their windows looking terrible. I can't brush them clean however hard I brush and however much water I use. I told the customers I'll be back to have a go with the squeegee but not sure if that'll do it. I think the grit might have bonded chemically with the glass. Any thoughts/suggestions of what to do would be greatly appreciated.

Many thanks

20210604_161522.jpg

If you have access to a hose rinse them off with good flow.

Hot water in a bucket or TFR and give them a good soaping up and then wfp them after May restore them

Just be very cautious of grit on the glass to avoid scratches

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Builders clean surely? The responsibility of them to take the time, effort and risk to clean it and to take the responsibility if they get scratched.

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29 minutes ago, Pjj said:

Could be cement dust stuck on the glass ???

I think that's it. Customer said he was getting some of it off with just rubbing a cloth with washing up liquid. I think I'll rub with a cloth, wash it all down with tap water from my hose then wfp it. 

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1 hour ago, Ednic said:

I think that's it. Customer said he was getting some of it off with just rubbing a cloth with washing up liquid. I think I'll rub with a cloth, wash it all down with tap water from my hose then wfp it. 

A scraper should remove it ok but scrape in one direction and on wet glass 

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Surely this is the responsability of the people that have done the concrete work!!

 

I had a customer few weeks ago that had new patio laid, cement all over the french doors, wouldnt come off by normal technique, customer messaged me to say "you didnt fully clean the windows" i pointed out that the cement was the respobsability of the landscapers and that scrapping it off could cause damage to the glass, and i dont do builders cleans, theyre taking it up with the other company and im still their windy 👍

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