Experimentation · Material
RE‑DAR
Waste that tells its origin. A ceramic paint made 100% from wastewater sludge: materials that narrate the water cycle.

The starting point
Can we transform water residues into useful, meaningful materials?
The drinking water we consume generates sludge at treatment plants. RE‑DAR explores the material feasibility of those residues and turns them into something useful and expressive.
The result is a ceramic paint whose texture and tone vary with the metallic load of each city's greywater, making visible, and measurable, what we usually hide when we empty the tap.
Material derived from treatment-plant sludge.
Every batch varies with the metallic fraction of the sludge: unrepeatable colour and texture.
Earthy finish for exhibition uses and conscious surfaces.


What stays with me
RE‑DAR turns an invisible residue into valuable material: a paint that communicates the origin of its matter. A technical solution and, at once, a critical narrative.
Turning the discarded into matter that speaks forces us to rethink the value of the everyday. RE‑DAR is both a material experiment and a pedagogical gesture.
What if waste could tell us the story of the water we drink?
The project in pictures




From treatment plant to glaze
Three treatment plants around Barcelona, three different sludges. Dry, grind, dose and fire until you find the temperature at which each waste turns into glaze.








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