Developers

Yes! It is possible and with clear financial advantages. By moving your storage tank to the top of the roof, you can use the freed-up space for retail space, parking, EV charging stations, storage and more. NLSM’s multi-tasking, detention systems include the StormCap™+Detention green roof and the SpongeBase™+Detention patio system. This rooftop combo meets water balance and water quality requirements and eliminates the need for a traditional storage tank.

NLSM helps you select the best and most economical green roof system to meet the Toronto Green Roof By-Law, Wet Weather Flow Management Guidelines (WWFMG) and the Toronto Green Standard (TGS). Our range of systems include lightweight and soilless, to robust with growing media, to more innovative systems that offer enhanced stormwater retention & detention management. For large inaccessible roofs areas, or for buildings with limited structural capacity, we have LiteN’Less, an economical minimalist, low maintenance, soilless system. To help meet TGS biodiverse requirements, we suggest the BioBerm™ to strategically enhance any extensive system – a happy medium that balances cost, loading and aesthetics! For enhanced stormwater management we offer StormCap™+Detention and SpongeBase™Systems.

Our experienced team reviews the specific project’s needs, design intents and any related by-laws and standards to help select the best option while considering cost, loading and aesthetics.

Leave the paperwork to us! Our experienced team will fill out and sign the Green Roof Declaration form. Have more questions about the City requirements? Please reach out and we will happily provide the answers.

Yes! ​NLSM’s vegetated systems are tested to CSA A123.24 and were subjected to 200 km/hour wind forces. We provide a project specific wind uplift letter stamped by a P.Eng upon request. Fun Fact: NLSM’s Dr. Karen Liu and Sasha Aguilera participated in developing the Canadian Standard Test Method for Wind Resistance of Modular Vegetated Roof Assembly – the first such test in the world. Tests were conducted at the National Research Council laboratory in Ottawa, Ontario and at the UL laboratory in Montreal, Quebec. Additionally, NLSM participated in the National Research Council Canada (NRC) field monitoring testing done at Humber College near the Toronto Pearson Airport.