Installation and Maintenance Mar Craft With proper care following Installation, your vanity top wi t a lifetime...and ond. 1. Prepare Vanity for Installation * Clean vanity of all debris. * Love the vanity front to back, side 1o side, as well as diagonally. = Shim the vanity to keep it level and secure the vanity to the wall. * As the vanity tops are heavy, be certain that the vanity can withstand the weight of the top.