A bedroom with a beige upholstered bed, a brown blanket, a white side table, and a patterned floor with brown tiles and white circles. A window with white shutters is in the background.

Radical Surfaces

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

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Fixed Formats. Designed to Stay Visible.

Three Aesop skincare products on a tiled shower ledge against a patterned tile wall.
Stack of colorful square tiles on a beige surface.
Interior room with two brown upholstered chairs with black wooden backs, a small round marble table with a drink on it, and a wall-mounted abstract wooden art piece.

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

Radical Surfaces

Placed With Intention.

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

A surfboard leaning against a light-colored wall in a room with a patterned tile floor. The surfboard has the words 'AL', 'TER', with 'AL' in orange and 'TER' in black.
A chocolate layer cake with a cherry topping on a white cake stand, placed on a circular wooden table against a green and white patterned tiled wall.