Canada leads the way for green roof wind standards
Dr. Karen Liu of Bonar Xeroflor testing the thin-layered XF301 green roof system for wind uplift resistance. (CNW Group/Xeroflor)
OTTAWA, July 29, 2014 /CNW/ - Canada is leading the way with the first standard test method for wind uplift for vegetated roof assemblies (VRAs). Xeroflor, inventor of the pre-grown vegetated mat, is part of this significant effort as a member of a research consortium led by wind expert Dr. Bas Baskaran of the National Research Council of Canada (NRC). Test results will be used to develop the first wind uplift standard of this kind. Simply put, it will be the "first systematic Pass/Fail technical standard for VRAs in the world," says Dr. Baskaran.
The wind uplift tests are being conducted at the NRC's Dynamic Roofing Facility in Ottawa, Canada, using a chamber fan mechanism that simulates the dynamic effects of wind. After laboratory testing, results will be benchmarked against real world conditions. "The next phase is to monitor vegetative cover on some actual buildings in the Greater Toronto Area under the influence of Mother Nature," said Dr. Baskaran.
In addition to this collaboration, Bonar has 25 in-house scientists who keep Xeroflor on the forefront of cutting edge research. As a green roof pioneer that developed the pre-grown vegetated carpet four decades ago, Xeroflor systems have undergone other stringent tests and are certified for fire and wind. "Fifteen years ago, the late international wind expert Hans Joachim Gerhardt tested Xeroflor systems in Germany for wind uplift resistance," says Dr. Liu. "Now, we are testing our system with the NRC to ensure that it meets the wind design requirements in Canada." Professor Gerhardt's 1999 wind tunnel tests showed that Xeroflor's patented XF301 green roof system remains secure against wind uplift on 100-metre tall buildings (approximately 30 stories).
Xeroflor's XF301 pre-vegetated mat is known for its lightweight and low maintenance features which makes it a popular green roof solution for older, even historic, buildings. It has fared successfully on buildings all over the world in strong winds, even hurricane conditions.
With more than 40 years' experience, the Xeroflor brand is the recognized international leader of green roof technology. Proven and patented, Xeroflor green roof systems are on thousands of installations worldwide including the groundbreaking, 10.4 acre Ford Motor Company Rouge Plant.
Bonar Xeroflor, (formerly Xero Flor Green Roof Solutions International) is the licensor with headquarters in Germany. Bonar Inc is a division of the Low and Bonar Company, a multinational group of producers and suppliers of performance technical textiles operating worldwide. It has a team of more than 25 in-house scientists working on research and development and innovation.
Xeroflor Canada is the Canadian licensee with headquarters in Toronto and a distributor in Quebec and employs leading industry professionals with decades of combined experience in architectural consultation and green roof design. Xeroflor Canada is the exclusive supplier of Xeroflor systems Canada-wide.
In addition to the NRC collaboration, Bonar Xeroflor and Xeroflor Canada are currently collaborating on new research with University of Toronto's Daniel's School of Architecture and University of Guelph's Environmental Sciences.
Image with caption: "Dr. Karen Liu of Bonar Xeroflor testing the thin-layered XF301 green roof system for wind uplift resistance. (CNW Group/Xeroflor)". Image available at: http://photos.newswire.ca/images/download/20140729_C8914_PHOTO_EN_42282.jpg
Image with caption: "Xeroflor (CNW Group/Xeroflor)". Image available at: http://photos.newswire.ca/images/download/20140729_C8914_PHOTO_EN_42283.jpg
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