How Much Does Snow Weight On Roof

Ten inches of fresh snow equates to about five pounds per square foot which means your roof likely can support four feet of fresh snow.

How much does snow weight on roof.

Two feet of old snow and two feet of new snow could weigh as much as 60 lbs. There is a calculation for this too. Unsurprisingly wet snow is the heavy stuff. How much snow a roof can hold depends on the type of snow roofline and material among other considerations.

Evaluate your risk of roof top snow ice accumulation snow usually melts off of steep sloped roofs slopes greater than 3 inches of slope in 12 inches of horizontal distance more quickly than flatter roofs. Before the snow starts to fall and build up on the roof of your house take the time to know how much snow your roof can support. The roof of any building is the area subject to the greatest weight temperature and moisture extremes. 28 40 light fluffy snow.

Per square foot of roof space which is beyond. Calculating the weight of snow is useful when you need to know the total weight it adds for example to calculate the weight on a roof. For any rafter the portion of the roof deck that transfers this load is the tributary area. 3 5 inches of old snow is equal to one inch of water or about 5 lbs.

The weight of the snow. If it snows 5 of wet snow it will weigh about 12 5 pounds. Wet snow can be nearly three times heavier than dry. Here are a few examples of the weight of snow on a roof.

Snow loading is the downward force exerted on structures by the weight of accumulated snow. With this information you re now likely wondering about the weight of snow load on your roof. Calculate the weight of the snow on your roof. How much does snow weigh.

Calculating snow load on your roof depends on two factors. 1 foot of snow on the roof 8 000 lbs 4 tons 7 psf 2 feet of snow on the roof 16 000 lbs 8 tons 14 psf 3 feet of snow on the roof 24 000 lbs 12 tons 21 psf. All numbers are approximate. Snow which is just frozen ice crystals varies in weight by its volume and density.

Fresh light and fluffy snow will weight much less than the dense packed or wet variety. Per square foot of roof space so anything more than 2 feet of snow could be too much for your roof to handle. Calculating snow load on roof. The roof deck collects the snow load and transfers the weight to the rafters.

Psf pounds per square foot. How much does snow weigh on a roof.