Crete Molds offers one of the largest selections of reusable fiberglass sink molds for cast concrete countertops. Every mold is built around our patented Rimlock inner structure, which holds the mold's edge firmly in place during casting for a clean, consistent release every time.

Choose from vessel, undermount, and cast-in-place sink mold styles in kitchen, bath, bar, and utility sizes, plus rectangle, trough, wave, and oval profiles. Each mold includes a free drain plug insert and a lifetime warranty, so one mold can cast as many sinks as you need.

Crete Molds has designed and manufactured concrete sink molds in the USA since 2009. Browse the styles below, or contact us if you don't see the shape you're after — we can often build a custom mold to match.