tell them pure water wont remove the residue and advise they contact the builder to get the window company back to remove it .i live in a new build and thats what i did
my view on the residue is were window cleaners as in removing dirt,unless your doing a builders clean
Yep. I remember about 15 years ago a snotty customer telling me that I should have removed the paint spots on his (self painted) windows.
I said that I'm happy to remove 8 weeks worth of dirt, bird mess and snail trails but not to clean up after sloppy painters.
He said that he had done the painting himself.
It took all my willpower (back in my flounce on a sixpence days
) to shut up and just look at him.
He broke first and had the graciousness to admit that I had a point.
He remained a good customer until he passed away a few years ago.