STRI is an official green roof testing house for The GRO Green Roof Code.
Our research team offer green roof substrate testing according to standards set by GRO and German FLL Guidelines. In addition, we also help clients to develop bespoke substrate mixes which are fully compliant with GRO and FLL guidelines.
Green roof terrace
Standard substrate tests include:
Physical testing | Chemical testing | Biological testing |
| Density | Plant available nutrients | Biological compatibility |
| Porosity | Total nutrients | Germination success |
| Permeability | pH | Mycorrhizal potential |
| Organic matter content | Electrical conductivity | Drought tolerance |
| Particle size distribution | Heavy metal presence | |
| Water holding capacity | ||
| Particle density |
Other substrate tests are available on request.
Green roof consultancy
We provide a consultancy service to assess the physical and ecological condition of installed roofs. Site visits include advice on infrastructure management plans, remedial action to improve roofs and ecological surveys of flora and fauna.
Green roof planting
Design and planning advice
STRI’s planning department will advise on the design and implementation of new building developments, specifically those involving the integration of green infrastructure.
