FAUCET INSTALLATION INSTRUCTIONS For Use WALL MOUNT BASIN Granite Marble Care & Maintenance Your new granite/marble vessel top has been factory sealed and polished to a smooth glass finish.In order to maintain the surface and keep it looking fresh and natural, we recommend the following procedures: 1. All stone products require a resealing at least once a year. Since your top has already been sealed at the factory. You will need to schedule your top for resealing accordingly. 2.