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Green Roof Stands up to Near Hurricane Winds
Karen Liu, PhD, Product Manager, Bonar Xeroflor, testing XF301 Sedum Standard at the NRC.
A new test report shows that Xeroflor’s green roof system has proven its ability to withstand violent Canadian storms and near hurricane winds.
The XF301 Sedum Standard pre-vegetated green roof assembly recently tested to CAN/CSA A 123.24 and proved itself under vigorous wind uplift pressure and flow conditions at the National Research Council of Canada.
“We are very excited about the test results – they confirmed our belief that by combining superior designs with quality materials, green roof systems can be made thin and light yet highly resistant to wind uplift forces,” said Dr. Karen Liu, Product Manager of Bonar Xeroflor GmbH.
XF301 Sedum Standard tested to the CAN/CSA A 123.24 and can withstand near hurricane winds. It is one of the lightest green roof systems available on the market.
Lightest green roof system sustained speeds of 170 km
The XF301 Sedum Standard, one of the lightest green roof systems available on the market, sustained a wind speed of 170 km/h (106 mph) and a wind pressure of 9.6 kPa (200 psf). The green roof system was intentionally tested at a drier than normal service condition at only 27 kg/m2 (5.6 psf) to obtain more conservative results.
This remarkable lightweight system is a German technology with roots that go back four decades when Xeroflor invented the pre-vegetated mat. While Xeroflor’s system has been previously tested in Germany for wind, this is the first North American test.
Today, this innovative system is found on landmark buildings around the world and is most highly regarded for its high water-retention-to-weight ratio.
This video shows Xeroflor getting tested at the NRC wind labs.
Key Industry Partner
Xeroflor was a key industry partner in the development of the CAN/CSA A 123.24 Canadian Standard Test Method for Wind Resistance of Modular Vegetated Roof Assembly – the first such test in the world. This method measures the wind uplift resistance of a green roof system and provides a tool for the designers and building officials to evaluate its suitability for specific projects to ensure public safety.
Wind expert Bas Baskaran, Ph.D, P.Eng, and his team, oversaw the testing and issued Report A1-004442 on February 10, 2016.