We have an old buffet that I converted into a vanity for use in the bathroom. To make the top water resistant, we used a deck sealer. Whether or not that was the best choice, the deed is done.
The plumbers we hired cemented the sink to the top of the vanity using a silicone caulk, however, it appears not to have worked. The sink slides freely on the top of the vanity.
What kind of caulk will adhere to the deck-sealed wood?