Preventing Roof Collapse
Although significant snowfall accumulation is not common in the Richmond metro region, it can and does happen.
Most residential roofs are designed to handle 20 pounds of snow per square foot of space. Following are some guidelines to help determine the weight of snow.
Fresh snow – 10-12 inches of fresh snow is the equivalent of 1 inch of water, or about 5 pounds per square foot of roof space. Assuming no structural damage or decay, your roof should be able to support about 4 feet of new snow.
Packed snow – 3-5 inches is equal to 1 inch of water or approximately 5 pounds per square foot of roof space, therefore any more that 2 feet of old snow may exceed the load capacity of the roof.
Ice – 1 inch of ice equals 1 foot of fresh snow. So 4 inches of ice would be the equivalent of 4 feet of fresh snow.
Here is a handy chart for reference, provided by IBHS:
Following these basic procedures can greatly reduce the risk of damage; however, should you discover water, or any other, damage quick action is imperative. We have trained and certified technicians on call 24/7 ready to respond to emergencies, find out more here.