Snow Bars for Metal Roofs
Snow bars, also called snow rails or metal roof snow retention, are snow guard systems that prevent large amounts of snow and ice accumulation from suddenly sliding off a sloped metal roof. Instead of releasing in dangerous avalanches, snow and ice are held in place by a rail system so they can melt gradually and release in smaller pieces.
Contractors install snow bar systems on a wide range of metal roof profiles, such as standing seam, corrugated, and exposed-fastener, whenever a building is located in a climate with regular winter snow. These systems are typically installed above eaves, doorways, walkways, and around rooftop equipment to prevent snow from breaking loose in the wrong place. Properly planned snow guard spacing controls how the snowpack moves, protects high-traffic areas below, and lowers the risk of damage or liability.
Compared to individual snow guards, snow bars distribute the snow load across the roof and are often used for larger roof areas or heavier snow regions. The SnoBar and ColorBar systems provide durable, long-lasting snow retention for a wide range of metal roof panel types.
What Are Snow Bars?
A snow bar is a horizontal metal rail installed across a roof to prevent snow from sliding. The system holds snow in place and allows it to melt gradually rather than fall in large, hazardous sheets.
Where Snow Bars Are Used
Snow bars are commonly installed on metal roofs above areas where falling snow could cause damage or create a safety hazard. Typical installation zones include roof eaves, entryways, walkways, loading areas, and mechanical equipment.
Snow Bars vs Snow Guards
Individual snow guards act as small, discrete blocks that installers lay out in patterns across the roof. Snow bar rail systems are usually a better fit for larger roof sections or buildings that take on heavier snow loads. Individual guards, by contrast, make more sense when you only need light retention or when the project calls for a cleaner, more architectural appearance.
