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I just dry fitted a new cultured marble vanity top (integral sink) on a newly installed bathroom vanity. The standard plan was to use silicone adhesive along the rim of the vanity to mount the countertop.
Unfortunately, the underside of the sinktop is VERY rough and uneven. There are few spots where it meets the base with enough surface area for adhesive.
What might I try? Gobbing up lots of silicone? Can I drill and screw into cultured marble? Should I first glue some blocks to the sinktop bottom and use those for mounting?
Thanks.
Replies
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Very thin blocks about 2" long at each corner to get the top sitting level and secure, make that permanent with a little epoxy, then pump a gap-filling adhesive into the voids from the inside (EnerBond is easy, but you have a lot of lattitude).
*Put on a good dust mask, eye protection and have at it with a belt sander. You should be able to flatten out the high spots and get a better fit. Be sure not to hit the finished edges. Do not drill or screw into the product.
*Set it in wet mud.
*I agree with Rich. Assuming you have at least 3 or so inches of ledge, you could use a latex modifier to bond thinset to the rails and set it down on the thinset. Should fill in any gaps. Just clean up the excess when it's wet. Laticrete makes a thinset/latex combo that bonds well on wood.
*No, not thinset. I mean cement and sand---MUD. Just paper and staple in place if the subtop is made out of wood slats. If the subtop is plywood, don't even use paper. Avoid the expense of thinset. Besides, this is a misuse of thinset. Thinset is not so much a bridging medium as it is an adhesive. Also, there will be shrinking during cure--the thicker, the more shrinkage--of the thinset.
*Ralph has the right idea......Go get a 3M blue belt (80 grit) ....It will knock it down level in no time. Gooping junk under the sink is not very professional! If the whole top is so warped that it won't fit a flat cabinet, take it back.
*I agree with LaLonde....fillers regardless of what they are end up looking nasty in time. Sand it smooth. It shouldn't be warped though cause it's poured into a mold.
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I just dry fitted a new cultured marble vanity top (integral sink) on a newly installed bathroom vanity. The standard plan was to use silicone adhesive along the rim of the vanity to mount the countertop.
Unfortunately, the underside of the sinktop is VERY rough and uneven. There are few spots where it meets the base with enough surface area for adhesive.
What might I try? Gobbing up lots of silicone? Can I drill and screw into cultured marble? Should I first glue some blocks to the sinktop bottom and use those for mounting?
Thanks.