thanks sambah, he is working on it today at work, will update....

Is the glass acid etched or is it an applied frosting? If applied denatured alcohol will more than likely remove the "frosting" as well as the caulk. If actual acid etched glass be careful as well as any finger prints or smudges will show through permanently, and normally anything is tough to impossible to remove on this type glass.

Try Xylene, Acetone most potent.

I did a Google search and found only one product that most users say works. It is McKaneca Silicone Caulk Remover Gel. It is sold online by acehardware.com. It is a very thick gel, in a tube. For a large flat surface you might need a lot. Wear rubber gloves; smear it on thick Cover with plastic film and let stand several hours. They say it loosens the silicone. The number of the product at Ace was 0354.

Again, if this is an applied "frosting", I think any chemicals will remove the "frosting".

I thought I would send you a rundown of everything I tried (even though I probably shouldn't have). I was getting a bit frustrated and thought I would have to buy a new piece of glass so I tried everything!

I tried Metho, turps, paint thinner, xylene, acetone, cleaning vinegar, rubbing alcohol, WD40, a random stain and mark remover, Windex, two types of silicone remover and they helped with the bulk of the silicone but none of it removed the residue. I tried all of them with microfibre cloths, plastic scrapers, sponges, abrasive side of the sponge and paper towel, I thought I was going to have to replace the brand-new window because it was everywhere. What ended up working straight away to remove the residue was a magic eraser and water.

Even places that I thought were damaged came up perfect.

My recommendation: Use silicone remover and lightly scrape with a plastic scraper to remove the bulk of the silicone, use a magic eraser to remove the remailing residue. My glass was acid etched and it worked perfectly!

Silicone is tenacious. I'll never use it again. I use instead Lexal synthetic rubber sealant.

we have done the same fitting our new frosted glass! eek

what magic eraser did you use? Thank you