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Old 09-03-2010, 12:26 AM   #1
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Solution for silicon?


I'm trying to get some old (but not very old) silicon caulk from a lightly porous surface. Some friends recommended hydrochloric acid. The silicon repels it handily. Does anyone out there know what will disolve this stuff?

Thanks in advance!

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Old 09-03-2010, 05:43 PM   #2
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Solution for silicon?


You will not dissolve the caulking. You can remove most of it by cutting, and you might remove the residue by sanding.
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Old 09-03-2010, 05:49 PM   #3
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Solution for silicon?


The only way I know to remove silicone caulk is by abrasion.
Sometimes it can be scraped off with a sharp razor blade, but there is usually some residue left that will need to be removed by abrasion of some sort,
especially if you are working with a porous surface.

I wouldn't recommend using hydrochloric acid for a couple reasons. The fumes are noxious and hazardous. Also it is so caustic it may damage the surface you are trying to restore.
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Old 09-03-2010, 06:02 PM   #4
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Solution for silicon?


Pumas stone and soapy water works good on the residue.
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