Snow Buildup On Metal Roof

These occur when snow or ice on the roof melts and then refreezes at the roof s lower edge.

Snow buildup on metal roof. However on the high end it could be over 40 pounds per square foot. When a metal roof undergoes a structural engineering design it necessarily takes into account the code required levels of snow accumulation for the building location. Some metal building manufacturers will not warranty a roof with a 1 4 inch slope. Have a professional install the snow guards if you re worried about damaging your metal roof.

Ask a friend or family member to hold the ladder on the ground to make sure it s stable. Metal roofs leak under these circumstances. Snow and ice buildup can slide off a metal roof causing a dangerous avalanche effect. To use the rake pull the snow toward the edge of your roof.

If you push the snow across the roof you could end up damaging the shingles. When the snow piled up on the roof melting occurred and ice dams resulted in water ponding 3 inches deep. At the low end that might be on the order of 10 20 pounds per square foot psf. Homeowners of asphalt roofs are vulnerable to ice dams.

On roof slopes between 4 12 and 6 12 rough textured roofing materials work best. This avalanche effect is why most homeowners should consider installing snow guards on their metal roof. Purchase snow guards from your local hardware or home improvement store. Others allow a 1 4 inch slope.

Roof slopes lower than 4 12 tend to perform well with metal roofs which are less prone to leakage and ice dam formation.