[JSMC]

Painter masked off a shop sign about 8 months ago and i was asked to clean it. I thought easy enough. Nope fkn nightmare.  Tried soaking it, tried virosol on splicator to soak and then gave wd40 a go. Also ye can use scraper as it bites into vinyl n lifts it off.

Next option is a solvent but hoping it doesnt damge the vinyl n lifts that also

[Stoots]

Glue remover. It shouldn't lift the vinyl if you don't get it under the vinyl to dissolve the adhesive.

Hope you are getting paid well for pratting about with it, perhaps ask yourself why bother if not...

[dave f]

i can not understand why any cleaner would even attempt any thing but dirt and bird muck I give a wide birth to any thing other than said stuff i just tell the customer that it was a possibility of scratching the glass works all the time its just not worth the hassell  one of my custys had a extention built .and it was full of cement blobs I was asked to clean it but I passed .any way went back next month to clean low and behold the windows were scratched to feck.

[P @ F]

Do a Michael Bolton and  "Walk away , Walk away"

[robbo333]

A dab of lighter fluid on a microfibre, Job done.

[JSMC]

Petrol on a rag

[robbo333]

Petrol on a rag

More of a butane gas than petrol but yes, a yellow tin of lighter fluid.
Don't knock it, 'till you've tried it...and don't smoke! 

[Tom White]

Do a Michael Bolton and  "Walk away , Walk away"

+1

[JSMC]

It is a weekly customer so best to try and get it done.

[dave f]

check your insurance first

[Elfyn]

Get the shop owners to pass the problem back to the painter.

[richard groves]

Get the shop owners to pass the problem back to the painter.

Exactly ! Why has it been left there for 8 months and become your problem.

[Spruce]

Get the shop owners to pass the problem back to the painter.

Exactly ! Why has it been left there for 8 months and become your problem.

Because the painter has been paid and they won't see him again no matter what they do or say.

We had the same with a coating a customer had sprayed on her outside walls. It was all over the windows and frames. She's asked me numerous times to just quickly get the coating splashes off  which I've refused to do.
She has tried to contact the painter but they just ignore her. It was her own fault for not inspecting the work before she paid them.

Now we are in her bad books because we refuse to clean it off.  I actually only keep her on as she is very friendly with mother in law. If it wasn't for that she would have had to find another cleaner long before now.  I also feel sorry for her as she has a very abrasive attitude to all men as she was treated badly in her younger days, so I try to make allowances for that and be more understanding when dealing with her.
I'm guessing the painter/s also took exception to her bad attitude and cleared out of there asap.