New answers tagged silicone
Silicone is soluble in vinegar. Try applying some vinegar to the remaining residue with a sponge, waiting 30 minutes or so, then trying to rub it off (perhaps with a stiff brush).
I'm not sure that complete removal is an option. As a result, the way I would tackle this is as follows: First, remove as much as possible with scraping. Next, paint (matching the brick color). If that still doesn't provide an acceptable asthetic, cover it up. Contact the window manufacturer to find out what stain was used and make a trim piece of wood ...
this works fine http://www.rona.ca/en/paint---silicone-remover you may have to find a supplier of it or something like it near you. it takes a lot of time and patience on brick, and you will have to reapply it many times to get it all off, but if you are patient, it removes all traces of silicones.
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