Issue to remove the previous layer of this silicone material....and it is an elastic material that I am scrubbing off with a toothbrush and cleaning vinegar to begin with....
![](https://cdnmedia.mapei.com/images/librariesprovider10/products-images/4_3000007-keracaulk-s-4instructions_02da11299bfb476195ea747b282c0136.jpg?sfvrsn=dc313d48_0)
Premium, Sanded and Unsanded Siliconized Acrylic Caulks Keracaulk S (sanded) and Keracaulk U (unsanded) are premium-grade, easy-to-use, easy-to-clean siliconized acrylic caulks formulated to match all of MAPEI's grout colors.
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Ideas?
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