A Dutch startup is designing concrete surfaces that help moss grow instead of treating every patch of green as something to remove.
Respyre’s bioreceptive material creates a suitable base for living moss on buildings. A TU Delft Campus profile describes a recycled-concrete coating developed from research associated with the university.
A surface for growth
In that 2023 interview, co-founder Auke Bleij described a coating made with 70% recycled concrete. Its porosity helps retain moisture and provides a growing surface without relying on the deep roots associated with other plants.
The university’s YES!Delft startup listing also identifies Respyre’s patented bioreceptive concrete and its purpose: enabling moss growth on existing structures.
The company now markets its technology as MossCrete, with applications including plaster-like finishes and facade panels. It describes a process of checking the substrate, applying the material, adding a moss coating and supporting establishment.
The “no watering” claim needs context
Respyre’s current process explicitly includes controlled irrigation while moss becomes established, followed by reduced irrigation. That is more qualified than viral claims that a wall never needs watering.
The company promotes moisture retention, particulate capture and cooling benefits. Specific results depend on a project’s conditions. Claims that every wall reduces surface temperatures by 30°C or nearby street temperatures by 7°C should not be presented as guaranteed outcomes without a relevant study and measurement context.
The underlying idea is real: material engineering can make a building surface more hospitable to plants. Its usefulness is best assessed through documented installations and performance data, rather than a dramatic image or a universal promise.