What you see on the outside of Sonoma Cast Stone concrete wine tanks is a strikingly beautiful, showroom-quality, polished concrete fixture, in the colors of your choice, proudly displaying your logo and the superior standards of your wine and your winery to all of your guests. What you don’t see is the quality of the concrete under the dazzling finish, the 20 years of experience developing concrete formulations, the superior engineering, and the unique concrete layering system that allow us to guarantee your tanks against structural cracks and leaking.