LiteN’Less™ Advanced is the ideal green roof system for retrofits that avoids excessive loading. The system is lightweight and soilless, with no “loose” growing medium. Sedum blanket is pre-grown, locally, outdoors and offers instant green with 85% foliar coverage upon installation. The Needled Mineral Hydro Blanket is non-petroleum, formaldehyde-free soil alternative that acts as a water reservoir and supports plant heath. The Needled Mineral Hydro Blanket holds up to 90% of its volume in water and is reliable throughout the lifespan of the vegetated roof.  All components delivered in the form of rolls that allow for a clean, fast and simple installation. Achieves more credits under LEED program.
Product Code Product Name Metric Thickness (cm) Dry Wt. (kg/m2) Sat. Wt. (kg/m2) Water ret. (l/m2)
NL718 Sedum Blanket 2.00 17.20 29.70 12.50
NL501 Needled Mineral Hydro Blanket 2.58 4.10 28.80 24.90
NL300 Drainage Mat 1.70 0.40 0.80 0.40
NL120 Root Barrier 0.05 0.47 0.47 0.00
Total 6.33 22.17 59.77 37.80


Increase BioDiversity

BioBerm™ with custom plants is an innovative method for integrating the best of extensive and intensive green roof features – creating topographic variation and biodiversity. It provides an enhanced aesthetic over areas that are highly visible and that can support extra weight.  Achieves a seamless integration of “plant-in-place” vegetation through pre-grown sedum blankets that are rolled over various depths of growing media. The sedum blankets help reduce water evaporation, soil erosion and weed growth.

Unique Design & Logo Creation

Sloped, rounded, pyramid shaped – LiteN’Less™ systems easily adapt and conform to various roof designs.

Increased Stormwater Retention

Option available for increased stormwater management using water retention layers which hold 60% more rainfall compared to typical growing medium of the same thickness while remaining 20% lighter in weight.


The roof membrane is located on top of the insulation and therefore subject to destructive elements such as ultraviolet degradation, thermal cycling, hailstone impact, and other environmental hazards. The LiteN’Less vegetated system is loose-laid on a CRA which helps to protect and extend the lifespan of the roofing membrane.


Insulation is located above the roofing membrane. A root barrier is installed in between the insulation and roofing membrane to promote open diffusion and ensure the top surface of the insulation has a ventilating air space. The roofing ballast above the insulation becomes part of the system and acts like the drainage layer. Contact us for other roofing assemblies.


Next Level Stormwater Management provides a Survivability Report with details about the success of our projects to assist with permit processes, such as the City of Toronto permit application.    For more info or help with other municipalities, please contact us.


Tested CAN/CSA A123.24
Next Level Stormwater Management was a key participant in developing the Canadian Standard Test Method for Wind Resistance of Modular Vegetated Roof Assembly – the first such test in the world. Contact us for more info and wind certificates.

Technical Document Downloads

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