Decide what type of concrete sink you want to use. Options include vessel, undermount, drop-in and apron-style, also known as farmhouse-style.. The style you choose depends on your taste and the function of the space. For example, a vessel sink may be functional in a bathroom, but it may not work well in a kitchen.
Select a shape for your sink. Concrete sinks are easy to customize, which includes the shape. Choose a standard circle, oval or rectangular shape, or opt for a design that includes more detail, such as a rectangle with cut-off corners.
Determine what size you want the sink to be. The size of the sink includes the depth from the wall, the internal depth and the width.
Select a color for your concrete sink. You can leave the concrete in its natural gray color, or dyes can be added to the material to create a customized color.
Choose a high-quality, highly durable sealant for your concrete sink. Concrete can easily stain and scratch and protecting it with a high-quality sealant can increase the durability of the material.