1. If necessary, install a root-proofing layer ECCO PE400. Anti-root foil should not always be used with EPDM or PVC unless specifically requested by the manufacturer.


2. Installing the ECCOprotect 400 protective layer: these 2.10 m x 40 m rolls are installed with 10 cm overlaps. These rolls are available per m².


3. Installing the ECCOsedum green roof trays: the green roof trays are held together by a click system and are cut using a saw or a disc cutter. The RHP substrate is held together by the roots of the sedum plants. When cutting, do try to keep the water buffering layer intact by cutting only to half height.


4. Vegetation-free zone: In case of more elevated roofs, we advise against having the ECCOsedum trays reach to the roof edges (vegetation-free zone of +/- 30 cm). This area is then filled with roof gravel, preferably 40 -80 mm.
Finer fractions are not recommended in order to prevent weed growth. This vegetation-free zone has multiple purposes:

  • – Preventing splashing precipitation from soiling the adjacent building
  • – Protecting the water drainage against clogging as a result of ingrowing vegetation
  • – Preventing the vegetation from hanging over the eaves
  • – Preventing any outbreak of fire from spreading from/to the vegetation
  • – Preventing the vegetation layer or substrate from being blown away by wind
  • – Preventing the wind from blowing up the sides of the ECCOsedum trays


5. Cutting the sedum tray, if necessary: only cut the top layer, keeping the bottom layer (water-buffering layer) intact.