We purchased a new vanity top to replace our 12 year old builder grade piece, however, it does not appear to sit tight on the base. It doesn't really sit "in" the cabinet, and only the back sides seem to make contact. It's a standard vanity top size (49 x 22"), and my cabinets are standard also. What can I do about this? It appears to be fine from the top, but when she open the doors or look under the vanity top from inside the cabinet, you can see the issue. Any help would be greatly appreciated.
What can be done about a vanity top that doesn’t sit tight to cabinet base
bathroomvanity
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Best Answer
In my experience the normal, common way to attach such a top also fills any gaps, since it's good old silicone caulking - White or brown would seem like a good choice here. You can also attach by other means if you like and then caulk to seal and conceal. And you certainly should shim (or sand/grind the high spots on the base) to get it level. If the gap is larger than it seems in the pictures, use backer rod and caulking.