Profile: Weathergard Window Co., Inc. is a manufacturer of window and patio door. We produce vinyl windows. We also offer a fully welded window lineup, warm edge technology for glass units and standard low-E/argon glass units in all windows. Our windows are marketed under the brand name of GardTech™. Our double slide window features a clean, streamlined look and is ideal for homeowners who appreciate an unobstructed view of the outdoors. Our vinyl siding is manufactured with proprietary designs and ingredients. Our steel entry doors have a patented adjustable hinge plate system that is unmatched in the industry. The adjustable hinge plate - located inside the door at each hinge - allows for adjustment up or down, in or out. This is important because improper door alignment can cause the weather-strip seal to break, allowing outside air to enter or heat to escape.