Modterra is a Colorado design studio creating concrete sinks, basins, and objects in hand-cast GFRC. The work grew from travel and a life spent in the American West, the colors we returned to, the forms carved by wind and water, the names on old maps most people pass without noticing. We believe objects should carry the memory of how they were made. Each piece is cast slowly, refined by eye, finished by hand, and built to outlast the space it lives in.

About Us

About Modterra

Remote dirt road stretching through high desert landscape beneath an open blue sky in the American West.
Hands sanding a handcrafted concrete sink in the Modterra studio during the finishing process.

We make concrete sinks that feel like objects, not fixtures. Each one is hand-cast to order in our Colorado studio, which lets us control what matters, form, surface, and durability, while accepting the subtle variation concrete brings. There are three vessel sinks to start, the round Caldera, the rectangular Mesa, and the pill-shaped Arroyo, with more forms on the way. We move slowly because the material asks for it, and every piece is refined and finished by eye before it leaves the shop. What you receive is intentional, made to last, and backed by a lifetime structural warranty.

Our Approach

Close-up of cracked desert earth and mineral textures inspired by weathering, erosion, and natural sediment patterns.
Dark brown concrete vessel sink in a warm tiled bathroom with bronze faucet, tonal walls, and textured materials.

We work in GFRC, glass fiber reinforced concrete. The glass fibers make a material that is lighter and stronger than traditional cast concrete, with a finer surface that holds form and detail exceptionally well. Our color is integrally pigmented, mixed through the concrete itself rather than painted on, so it runs all the way through the piece. Like all concrete, it is variable by nature. Tone and texture shift slightly from one piece to the next, and the surface keeps developing character over time. We consider that part of what makes it worth owning.

The Material

Storm clouds moving across a desert landscape with distant mountains and dry brush in muted evening light.
Close-up detail of a deep blue concrete sink highlighting the softened edge and textured matte surface.

Our twelve colors draw from the landscapes that formed us, canyon walls, volcanic rock, alpine moraine, dry lakebeds, and surfaces shaped slowly by wind, water, and erosion. Each one is named for a place or a moment in the West, from Salt Flat to Cimarron to Pinyon. The work we're developing now pushes those same influences further, into texture, sediment, and the quiet irregularities found in nature. Nothing is added that does not need to be there.

On Color & Form