[Pittmonkey]

Anyone know what I would use to remove lead staining from glass.

Been to price a Con Roof, not been done in 11 years and has a lot and I mean a lot of Lead Staining from the lead flashing.

I have some MDR, tried this on a leaded window once and didn't really have much effect. Anything else to recommend.

Thanks
Wayne

[d s windowcleaning]

have you tried tfr mate .

[pjulk]

oilflo141 will probably shift that.

[Pittmonkey]

Anybody used this? and would this do the trick.

www.windowcleancentre.co.uk/productdetails.aspx?ProductID=186&SectionID=40

There's another called wurzer or something cant remember.

I have some Oil flow Paul but again didn't seem to have much success with it in the past.
TFR not a chance dave. I use it on Con Roofs and know its limitations.

Wayne

[Wayne Thomas]

No Joke...hot wfp with a decent brush and some elbow grease will shift it.

[dmlservices]

are they polycarbonate, or glass panels,? will be easiier to remove of the latter.



daz

[Pittmonkey]

They are glass panels and haven't been cleaned since it was built 11 years ago.

Some of the panels are completely discoloured from the lead flashing some are patchy with the usual algae and dirt. 

If this was just going to be a 1 off job I would have turned it down but there will be quite a bit of business generated from this and they are prepared to pay well for the job.

I really just want to turn up with the right stuff and look pro and crack on with the job. I don't want to go and look a little unprofessional by trying this that and the other and then still not getting the right result. This and the other properties concerned are the w/c jobs we all look forward to getting.

[michael papworth]

I suspect that the staining is due to a chemical reaction between the lead and the glass.

Rain water can be acidic due to dissolving carbon dioxide from the atmosphere. This makes carbonic acid. I suppose that this could dissolve a minute amount of lead to form lead carbonate. This could react with the glass over many years and in bright sunlight.

If I'm right, it's incorporated into the glass surface and won't come off.

I stress that this is only an idea and I have no evidence for the truth of it. It might well be utter rubbish!

I have a similar lead stain problem on one customer's window, and nothing will shift it. I've even tried a scraper - and that won't touch it. The only thing left to try is jeweller's rouge, and I'm not going down THAT route.

[NWH]

I suspect that the staining is due to a chemical reaction between the lead and the glass.

Rain water can be acidic due to dissolving carbon dioxide from the atmosphere. This makes carbonic acid. I suppose that this could dissolve a minute amount of lead to form lead carbonate. This could react with the glass over many years and in bright sunlight.

If I'm right, it's incorporated into the glass surface and won't come off.

I stress that this is only an idea and I have no evidence for the truth of it. It might well be utter rubbish!

I have a similar lead stain problem on one customer's window, and nothing will shift it. I've even tried a scraper - and that won't touch it. The only thing left to try is jeweller's rouge, and I'm not going down THAT route.

It could also be WFP,i`ve had a few go like this.

[Wayne Thomas]

I have a bungalow I clean every 2 months with 2 bay windows that have lead flashing above. The glass is covered in lead stains at the top half and the UPVC frames are fine.
I soak the glass first, clean the other windows then come back to these two difficult windows and scrub them both twice with a lot of pressure on the glass, then rinse once but use hot, (not warmish) water and they come up a treat every time.