Quality criteria – Substrates for green roofs
RAL-certified substrates for single-layer extensive green roofs
These substrates are mixtures predominantly or exclusively of mineral products of different particle sizes. They must perform the functions of the vegetation support layer and drainage layer for near-natural low-maintenance forms of vegetation on top of buildings in the long term.
Download quality criteria for single-layer extensive green roofs
Quality criteria – Substrates for green roofs
RAL-certified substrates for single-layer extensive green roofs
These substrates are mixtures predominantly or exclusively of mineral products of different particle sizes. They must perform the functions of the vegetation support layer and drainage layer for near-natural low-maintenance forms of vegetation on top of buildings in the long term.
