How to remove a lead stain from the windows

cleaningglasswindows

I have lead around my windows and after a new lead installation there has been a stain there for over a year. I have tried window cleaner and multi-surface cleaner but no success.

I had an 'easy clean' treatment applied to the windows when I bought them and wonder if the fix to remove this stain then will also affect the treatment.

Best Answer

Had hazy marks from lead flashing on conservatory roof. I thought I'd try 'Silvo' which is non-abrasive and used for cleaning fine silver. Success!! The marks came off a treat with really minimal rubbing with a soft cloth moistened with the product. Crystal clear glass after