West Development Group (WDG), a leader in sustainable roofing products and practices, introduces the Z-Guard Pedestrian Traffic System for use on sprayed-in-place polyurethane foam roofs. Z-Guard is a one-component, moisture curing, silicone/quartz liquid composite slurry designed for use around all equipment requiring servicing, as well as areas of heavy foot traffic. The Z-Guard reinforced, silicone walkway is a dispersion of silicone rubber, organic...