The printed tile with its branching surface
The printed tile with its branching surface.

Printing Living Walls

Can a printed surface keep moss alive through a dry summer?

Kind
Research before Studio G01
By
Pepijn van Rijthoven, graduation project, MSc Integrated Product Design, TU Delft
Material
Porous stoneware, printed, fired at 1100 °C
Size
Modules of 7.5 × 7.5 × 15 cm
Year
2025 to 2026

Cities hold heat. Moss on a facade cools the air by evaporation, but it cannot store water, so in a heatwave it dries out and falls dormant. This project prints a porous ceramic tile that harvests and stores rainwater and feeds it back to the moss by capillary action. The clay body, the surface geometry and the wall module were developed together, from recipe to living prototype. In outdoor tests the wet ceramic ran far cooler than a conventional wall.

Burnt-out coffee grounds and starch leave about 39 % open porosity
Burnt-out coffee grounds and starch leave about 39 % open porosity.
Five printed surfaces, compared for capillary uptake and water retention
Five printed surfaces, compared for capillary uptake and water retention.
Thermal image
Thermal image. The wet module stays close to air temperature through the day.

01 New Vernacular ZEER 03