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RETENTION ROOF MEANDER FKM 60

  • System solutions with defined water retention
  • High level of reduction of of water discharge during high intensity rainfall whilst retaining good drainage (even for large roof areas)
  • Peak discharge
  • Discharge coefficient Cs (according to FLL): 0.01 - 0.17 at 2° roof pitch
  • Water storage and discharge delay.
  • Suitable for blue roofs
  • For green and gravel roofs
  • Meander FKM 60 prevents accumulation of water in cases of ponding in depths of up to 40 mm
Ecological value
Maintenance costs
Referenzobjekt Retentionsdach Werkmann College Groningen
Weight * 110 kg/m² or 1,1 kN/m² 
Build-up depth 12 cm
Roof pitch 0 - 5°
Vegetation form herbs-grasses-sedum
Discharge coefficient ** Cs = 0,17
Water storage approx. 32 l/m²

* Depending on the load capacity of the substructure, Optigreen "High Density (HD)" or "Low Density (LD)" substrates can be used. Weight specifications refer to saturated conditions; dry weight is approximately 60 - 70 % of the saturated weight. In accordance with the requirements of the FLL guideline, the specified weight does not take temporary water accumulation into account.
** For the calculation of the dimensions of the pipe we recommend the discharge coefficient Cs = 0.1. Cs= 0.01 determined for 2 % according to the FLL guideline.
 

SEED MIX EKR AND SEDUM SHOOTS

Proven and specially-balanced seed mix consisting of a wide range of herbs and grasses (as desired) as well as numerous types of sedum shoots

Productdetails:
Seed Mix EKR
Sedum Shoots

EXTENSIVE SUBSTRATE E (60 MM)

A substrate with high water storage capacity and good air porosity, tailored to extensive multi layer systems.

Productdetails: Extensive Substrate E

COMBI INSPECTION CHAMBER TKS PLUS

(NOT SHOWN IN THE DRAWING)

Simple control of roof drainage outlets
Extendable in 100 mm increments
Side and top drainage openings

Productdetails: TKS Plus

FILTER FLEECE FIL 105

[Translate to English:] Optigrün-Filtervlies Typ 105

Prevents fine particles from forming sludge in the drainage layer
High water permeability

Productdetails: FIL 105

MEANDER WATER RETENTION BOARD FKM 60 (60 MM)

Delays discharge of surplus waster
Prevents accumulation of water
High level of water retention as well as good drainage performance
Reduction of required roof outlets

Productdetails: FKM 60

PROTECTION AND STORAGE FLEECE RMS 300

[Translate to English:] OPTIGRÜN- SCHUTZ- UND SPEICHERVLIES TYP RMS 300

Protects the roof membrane against damage and stores water.
For inverted roofs, use the Optigreen Trickle Protection Fleece RSV 120 instead of the RMS Fleece.

Zum Produkt:
RMS 300
RSV 120