Description
Built into each reGrow Sedum Cassette:
1. Drainage layer: excess rainwater can drain into the sewage system. That is why four drainage holes have been made per cavity at the top and bottom of the water-buffering layer.
2. Water buffering layer: rainwater is buffered capillary in a substrate of slightly expanded clay granules. The excess water that can’t be stored is being drained quickly of the roof. To create an extra water buffer for dry periods, water is also stored non-capillary because the drainage holes are installed about 1 cm from the bottom. This ensures that excess rainwater is drained to the roof drain(s).
3. Substrate layer: the thickness of the substrate layer is adapted to the needs of the sedum and the climate. The substrate layer provides the nutrients and water supply for the sedum on the one hand, and oxygen and anchorage for the roots on the other.
4. Vegetation layer – Sedum: The sedum cassettes have at least 85% coverage. They contain 4 to 8 different types of sedum.
Please note, we thoroughly advise checking whether your existing roof has a suitable waterproof layer, before then rolling out our WSB-50 Root Barrier and SV300 Protection Geotextile. From there you can lay the reGrow green roof cassettes on the roof.
If your roof requires edging then we advise laying this first.
Pricing inclusive of shipping.
