WindBar Standing Seam Metal Roof Wind Noise Suppression

The Windbar system is an external purlin for your standing seam metal roof. It adds uplift strength to new and existing metal roofs. The principle behind the WindBar system is the patented WindStopper foot. The bar spans between non-penetrating clamps placed on each seam, with devices mechanically fastened to the bar that extend down to the flats of the panel. The foot of this device, also known as the WindStopper, holds down the middle of the panel and prevents uplift under negative wind pressure. Uplift is a common issue with many standing seam roofs located in areas that experience high wind conditions. If left untreated, many of these buildings experience interior noise levels, making daily operations difficult. 

One WindStopper per panel, centered, is needed for standing seam panels with seam spacing less than 18". Two WindStoppers per panel, uniformly placed, are required for panels with seam spacing of 18" to 24". Three WindStoppers per panel, equally placed, are required for panels with seam spacing greater than 24". WindStoppers rest against the panel and are only mechanically attached to the back of the bar. Do not mechanically mount the feet of the WindStoppers to the flats of the panel.

The WindBar system typically has more rows than the most robust snow retention design. It can, therefore, operate both ways. Several Antarctic research sites trust WindBar, which proudly demonstrates its efficiency for these two purposes. With gusts up to 200 mph, Antarctica experiences the highest sustained wind speeds of any continent. The main distinction between the SnoBar/ColorBar and WindBar systems is that the WindBar's WindStopper is required. The SnoBar/ColorBar's IceStopper is optional. 

We include our 1" x 1" galvanized bars with Gatorshield coating in standard WindBar systems. Although the 2" extruded aluminum bar is an available option, we believe that given this system's robust design, it is often overkill and unnecessary. You must use the aluminum bar when the standing seam panels exceed 24 inches in width, and the area experiences typical winter precipitation.

Custom powder coating is available for WindBar systems at an additional cost. Accurate color matching typically requires a physical color sample. For information about pricing and availability, call us at 1-800-766-5291. We produce color-matched bar systems to order, taking three to four weeks to complete the production process. Customers can purchase a WindBar system in mill finish and spray paint it once it arrives or have it coated by a local coater if they prefer a speedier or more affordable route.

In contrast to our snow retaining rail systems, SnoBar and ColorBar, where the IceStoppers are optional, the WindStoppers are critical for the performance of a WindBar system and are a requirement. Although essentially the same thing, IceStoppers and Windstoppers have completely distinct uses in the two systems. The Windstopper attachments sit against the panel's flats and mechanically fasten to the back of the bar. Although the Windstopper feet are not mechanically attached to the panels, they exert pressure on the flats, pressing them firmly against the roof structure. When there are strong winds, this pressure stops the panels from flexing and vibrating.