Overspray on glass

[vanDub]

Very unhappy at present with overspray of some sort on all glass areas.

Didn't notice anything when delivered, but since having windows tinted 10 days ago there is a very noticeable blotchy milky residue on all glass areas except that portion of the front screen swept by the wiper blades.

Investigation by local dealer, Windscreens O'Brien and VW/BMW cerified panel beater shows that the problem is definitely on the outside and not in the 0.5cm section hidden inside the door groove (so its not a manufacturing flaw in the glass). Suspect is detailing process pre delivery as the car has not been sprayed with anything other than water for a wash prior to hand applied specialist paint protection treatment.

A variety of solvents (metho, mineral turps, thinners, prepsol and plumbers solvent) have progresively failed to remove it. Some abrasive measures appear to have some success and have been tried reluctantly.

Best results appear to have been with some old Re-Po extra cut polish with light elbow grease. Will need to wait for daylight tommorrow to see if all removed and cutting action not affecting toughened glass surface. Absolute very last resort will be something called 'Jeweller's Rouge" which Windscreens O'Brien use to blend out glass scratches.

Has anyone else had a similar situation or know what the residue might be and how to get rid of it?

[craig_the_german]

I have used a razor blade to remove overspray before. Get the single sided ones or ones that fit into a holder of some sort. Always have the glass damp and press very lightly, keeping the blade flat against the glass.
something like this

http://australianglasstools.com/stor...roducts_id=294

[BlackVr6ix]

get yourself a claybar from your local autostore. Works a treat for overspray, especially on glass!

if you prefer to save some cash just use a wad of bluetac and some quick detailer/waterless wash/spray wax as a lubricant.

spray fluid on glass and rub glass with flattened out bluetac.

wipe clean.

[vanDub]

Got the glass clean!!!

Added CLR (commercial calcium/lime/rust remover) to the solvent list without success but the old (I have had it for 30 odd years) Re-Po extra cut cream polish worked with minimal elbow grease and the toughened glass didn't scratch (as the panel beater who used a razor on it stated it wouldn't).

I presume that any polish with some level of cutting action designed to rejuvinate dull paint will work as well but I hope no-one ever has the same problem and needs to use my solution.

Picture 1 = rear window, near panel cleaned with centre panel showing problem

Picture 2 = same shot after centre panel cleaned.