Landscape Contractor / Design Build Maintain

JUN 2018

LC/DBM provides landscape contractors with Educational, Imaginative and Practical information about their business, their employees, their machines and their projects.

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>> Kris Zehr's story will be familiar to other experienced and successful landscape contractors who install hardscapes. Zehr Interlock & More (Tavistock, Ontario) has been in the business for more than 20 years. As the company name implies, they specialize in interlocking pavers. "With concrete pavers, I know what I am doing, and I know I do it well," he said. "I have been cautious about using materials I am not familiar with. When Porous Pave Ontario first introduced me to permeable pavement, I just was not sure why I should take it on - and take the risk." Changing Times That was four years ago. Today, municipalities in Ontario issue increasingly strict stormwater management regulations. Many impose higher utility fees on proper - ties that exceed allowed amounts of runoff into storm sewers. Developers and builders need methods and materials to retain more stormwater on site. That has increased the demand for permeable pavement. "Good companies take on challenges and innovations," said Zehr. "To stay successful, you have to keep up with changes in the market. For us, that meant getting into permeable pavement." Zehr decided to build one patio with Porous Pave XL. He became convinced. "I have now completed 20 permeable pavement projects with the material." XL is a highly porous, pour-in-place pav - ing material that contractors mix on site with a liquid binder. "With 27 percent void space, the product can infiltrate 5,800 gallons of stormwater per hour per square down into the under - lying aggregate base on which you install it," said Jim Roth, president of the Stratford, Ontario, company that distributes the mate - rial in Canada. "It can endure freeze-thaw cycles, frost and ground movement without heaving or cracking, an important advan - tage with our winter weather in Ontario." A Grand Undertaking According to Zehr, his largest project in 2017 totaled 12,400 square feet at the LOT42 Global Flex Campus (Kitchener, Ont.): a 17-acre performance venue and events complex. To meet the city's storm - water regulations, and thereby decrease long-term municipal utility costs, the project incorporated a 50'x 20' French drain as well as the permeable pavement. "It is not only permeable, its recycled rubber content makes it a green material. The chips of recycled rubber in the pave - ment we installed came from rubber pro- cessed from about 3,500 discarded tires," by David Aquilina, Strategic Storyteller 8 LC DBM Top and Top Right The typical way to install Porous Pave, a permeable pavement material that consists of 50 percent recycled rubber chips and 50 percent kiln-dried, crushed aggregate, is to mix it on site with a liquid binder in small batches in a portable mortar mixer, pour it inside guides, screed the material to the desired depth, and finish it with standard tools like trowels and bull floats. However at the LOT42 Global Flex Campus in Kitchener, Ontario, 12,400 square feet of the material had to be installed. Jim Roth, the president of the company that distributes the permeable pav- ing material in Canada, devised two screed boxes: one 3' ½" wide and one 6' wide, which were pulled by a skid steer. With them, the contrac- tors could mix and install larger batches of the material. The plate compactor is to create vibration, which helps improve surface finish and prevent sticking of the polyure- thane binder to the screed and float. Permeable Pavement Meets Regulations / Ingenuity Meets Demand HARDSCAPES Continued on page 10

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