Cleaning Old Silicone Off Marble Shower

by Carmen
(Vero Beach, FL)

QUESTION:

I have glass shower doors in my shower attached to a marble threshhold. There are mildew stains in a few places under the clear silicone sealant where the metal framework was not sealed properly to the marble threshhold. We need to strip the silicone sealant and reseal it.

What is the safest way to strip the old silicone and clean the mildew stains on the marble and leave a clean surface to reapply the new silicone? Is it safe to use mineral spirits to dissolve the old sealant and a scratch free abrasive pad? Thanks for your help.

ANSWER:

Yes, you can use a solvent like mineral spirits and a non-abrasive pad or brush. We usually recommend acetone because it evaporates faster than mineral spirits.

Once all the silicone is gone, you should use BLAST Mildew Remover for cleaning marble mildew.

This product is very effective and formulated specifically for cleaning marble, so it won't etch or damage at all.

When you re-caulk, be sure to use 100% silicone. Others may eventually stain the marble.

Good Luck,
Ryan

P.S. Get all the facts, answers, explanations and simple solutions with step-by-step instructions for any issue, problem or question with our Granite & Marble Maintenance Manuals.

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