Materials:SKYWATER Ballasted-Inverted Hybrid Roof

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Materials:SKYWATER Ballasted-Inverted Hybrid Roof



Division C - Accepted Materials
Group - Vegetated Roof Systems


SKYWATER® Ballasted-Inverted Hybrid Roof
by Soprema Inc.

Material Acceptance and Product Details


The information published in the RCABC Roofing Practices Manual and offered below does NOT represent a complete set of the manufacturer’s data or specifications, nor is this material recommended or endorsed by the Guarantor. The preparation of a detailed specification is the responsibility of the Design Authority.

Vegetated Roof System Manufacturer
Soprema Inc.
Accepted for the RoofStar Guarantee Program
October 25, 2024
Accepted for application in
Vegetated Roof Systems
Acceptance Criteria
Refer to the RGC Standard for Vegetated Roofs
System Summary
SKYWATER® Ballasted Hybrid Systems by SOPREMA® are a combination of blue roof and green roof. This system reduces the volume of rainwater sent to the sewer in addition to decreasing its flow. Water is absorbed by the SOPRANATURE® vegetated system as well as by SOPRARETENTIO BOARD, providing a higher retention capacity than a green roof alone.
Extensive VR System (sedum tile).jpg
Manufacturer Online Resource
SKYWATER Ballasted-Inverted Hybrid Roof
System Depth
107.9 mm (4-1/4") 336.5 mm (13-1/4") +
Growing Media Depth
76.3 mm (3") 304.8 mm (12") +
Vegetation Profile
Sedums, dry prairie grasses, dry flower meadows, and vegetation with a range of water needs, inclusive of urban agricultural crops (as specified by the Design Authority/Green Roof Design Professional. See Conditions and Limitations. Suitable vegetation depends on the selection of growing media).
Suitable climate zones
All BC zones, subject to manufacturer's approval
System Components
Sedum Mats by Soprema, or non-sedum mat supplied by others* (Click here for the Technical Data Sheet PDF)
Sopraflor I growing media (Click here for the Technical Data Sheet PDF)
Sopraretentio Mat (Click here for the Technical Data Sheet PDF)
Sopraretentio Board (Click here for the Technical Data Sheet PDF)
Soprafiltre (Click here for the Technical Data Sheet PDF)
Sopradrain Eco-5 (Click here for the Technical Data Sheet PDF)
Soprabarrier 30 (Click here for the Technical Data Sheet PDF)
Soprema approved tape
Sopranature® metal edging (Click here for the Technical Data Sheet PDF)
Sopranature® inspection chambers (Click here for the Technical Data Sheet PDF)
Conditions and Limitations
Note that system thickness is dependent upon the selection of components, which is determined (in part) by design parameters, including hydrological requirements. Consult with the vegetated roof system manufacturer for options and saturated system weight.
Also note that vegetation coverage under the RoofStar Vegetated Roof Guarantee applies only to extensive systems planted with mats or trays - see Part 3 of Division A for more about coverage.



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