Glass deep cleaning

[flh801978]

I have a friend whose wife has opened a cake shop/cafe
The premises previously were a hairdressers with large signwriting in the windows stuck on letters type of thing
The lettering has been removed with a mixture of blade and peeling and then a variety of solvents and to all intents the glass is now spotless to look at and to touch
However when the windows condensed up the previous lettering can be clearly seen.

Has anyone any ideas on what to use to clean the window so it doesnt happen?

Ian

 

[finneyb]

Try a mild abrasive eg brasso on a small area of the glass that was underneath the letters

Brian

 

[carlb40]

Depends on how long the signs were on the glass for? Plus the location. Don't forget glass like everything else weathers. So what you are seeing might be newer protected glass compared to weathered glass. So you might have to sit it out.

 

[MMUK]

Jeweller's Rouge It'll also remove and shallow scratches.

 

[flh801978]

I took him in some MEK ( methyl ethyl ketone) and that with a green scourer and lots of elbow grease seems to have done the trick

 

[rannndy]

thinner does the job for me with stickers,labels etc

 

[rannndy]

just a thought sometimes a hair dryer can do the trick.

 

[rafezetter]

I'd wondered about this too, as in our bathroom the mirror suffers the same issue - can look spotless - even after using a good glass cleaner, plus I've even tried limescale remover; but soon as it steams up you can see where all the previous water spots that had been left to dry were, it's practically a jackson *******. It doesn't actually get in the way, it's just an odd phenomena I thought.

 

[Jonzjob]

The hairdrier trick is great for getting all sorts of lables off of all sorts of things, from glass to stick lables on jiffy bags.

If I had been in time I would have suggested acitone to get rid of the marks. Same sort of nice stuff as MEK..