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Dutch Startup Develops Concrete Coating That Grows Moss

Dutch startup Respyre has created a bioreceptive concrete coating named Mosscrete that enables moss to thrive directly on vertical walls. Originating from research conducted at Delft University of Technology, the material draws moisture entirely from rainfall and ambient air. Because moss anchors through tiny rhizoids rather than damaging root networks, the coating protects the underlying structure without requiring supplemental soil or dedicated irrigation pipelines. The company has already deployed the technology across eight testing sites in the Netherlands and Belgium. In Kortrijk, Belgium, contractors applied the material over 450 square meters of a new warehouse facade linked to rainwater catchment. In Hoofddorp, the coating covers a 300-square-meter highway noise barrier to examine passive moisture absorption alongside acoustic damping. Another deployment on social housing in Purmerend offered a low-maintenance alternative to cost-prohibitive vertical gardens. Additional trials explore practical city benefits beyond visual greening. In Amsterdam, municipal bridge piers coated in the material discourage graffiti while researchers measure natural growth under variable humidity. Testing in Haarlem showed that while damp moss aids surface cooling through evaporation, dry moss requires careful placement away from relentless sunlight.

· Optimist Daily

The essential points

  1. 01Dutch firm Respyre created Mosscrete, a concrete coating engineered to cultivate living moss across outdoor vertical facades.
  2. 02The material relies on rain and ambient moisture, removing the continuous irrigation and heavy soil needed by traditional green walls.
  3. 03Pilot projects across Belgium and the Netherlands include an industrial warehouse, social housing, and a sound barrier.
  4. 04Municipal trials in Amsterdam also evaluate whether moss-covered bridge piers help deter persistent graffiti while supporting urban biodiversity.
The full brief

Dutch startup Respyre has created a bioreceptive concrete coating named Mosscrete that enables moss to thrive directly on vertical walls. Originating from research conducted at Delft University of Technology, the material draws moisture entirely from rainfall and ambient air. Because moss anchors through tiny rhizoids rather than damaging root networks, the coating protects the underlying structure without requiring supplemental soil or dedicated irrigation pipelines.

The company has already deployed the technology across eight testing sites in the Netherlands and Belgium. In Kortrijk, Belgium, contractors applied the material over 450 square meters of a new warehouse facade linked to rainwater catchment. In Hoofddorp, the coating covers a 300-square-meter highway noise barrier to examine passive moisture absorption alongside acoustic damping. Another deployment on social housing in Purmerend offered a low-maintenance alternative to cost-prohibitive vertical gardens.

Additional trials explore practical city benefits beyond visual greening. In Amsterdam, municipal bridge piers coated in the material discourage graffiti while researchers measure natural growth under variable humidity. Testing in Haarlem showed that while damp moss aids surface cooling through evaporation, dry moss requires careful placement away from relentless sunlight.