The change of the top current bathroom vanity with granite bathroom vanity tops can be a great way to update all your bathroom design. Disconnect waste pipes and faucet sink and faucet supplies installed in the upper old. Remove the screws that secure the top to the vanity part. Cut through any silicone caulk or adhesive holding vanity top.
Run a cloth on top of the vanity to remove any dust or dirt. Lift the granite in place and check fit into the toilet. The top should stand vanity by 1/2 inch on three sides. Remove the lid and put it upside down on a nearby flat surface. Install the faucet on top of granite bathroom vanity tops pushing the stems of the key at the top and fixing them at the bottom with a nut and wrench. Run a thin bead of Liquid Nails adhesive or silicone sealant to the top edges of vanity.
Turn granite bathroom vanity tops again and lift it above the vanity. Slowly lower into place so that compresses the silicone. Connect the drain hose in the sink under the lid and connect the pipes supplying water to the faucet with the socket wrench. Turn the water valves and test the tap to check for leaks.