Minimalist seating arrangement with two modern beige chairs on patterned floor and black vase on brick block.

Radical Surfaces

Reclaimed Cement. Natural Oxides.
Alter creates design-led cement and terrazzo surfaces for walls, floors, objects, and built-in architecture.

Fixed Formats. Designed to Stay Visible.

Geometric wall art with four square panels featuring abstract patterns in black and brown tones on a beige background.

We produce a library of cement tiles, terrazzo slabs and intentional objects using recycled cement, reclaimed stone, and natural oxides.

Stack of colorful square tiles on a beige surface.
Geometric tile bench and table set against textured walls with shadow patterns.

Each piece is cast to order.
No custom shapes. No seasonal palettes. No gloss finishes.

Placed With Intention.

Designed to be left uncovered. Not layered over, not hidden behind.

Minimalist outdoor seating area with geometric-patterned table and benches under a wooden pergola, against a beige stone wall backdrop.
Minimalist living room with cream sofa, cushioned chair, wooden coffee table, checkered tile floor, and a small vase on a ledge.