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Old 11-08-2010, 11:34 PM   #1
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cast iron sink over granite


I had my kitchen countertop replaced with granite. Granite was installed over 5/8" plywood. The new sink is 22"X33" top mount cast iron. The installer set the sink on the granite but did not seal the perimeter. He said it needs a different sealant when I ask him to use his white silicon. He said to check Home Depot what kind I need. Is there anything wrong using silicon? I know it will spread beyond the sides of the sink before being cleaned, specially now that I can no longer lift the sink. Will it damage or stain the granite? How about Plumber's putty?


Last edited by Garbo; 11-09-2010 at 06:20 PM.
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Old 11-09-2010, 04:38 PM   #2
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cast iron sink over granite


That's what they use all the time as far as I know.

Use denatured alchohol to tool and dress the silicone installation. Don't wait. Clean up any smears immediately.

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