Measuring snow load for flat roofs.
How much does snow wigh on a roof.
The snow load will be different depending on the construction of your roof.
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.
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.
Whether it s a flat roof or a pitched roof.
Even if you re only looking at the snow that lands on your roof that can be enough to cave it in.
Just consider the 20 or so homes that collapsed under the weight of a massachusetts snowfall.
Calculating snow load on your roof depends on two factors.
Per square foot of roof space so anything more than 2 feet of snow could be too much for your roof to handle.
How much does snow weigh on a roof.
Calculating snow load on roof.
Evaluate your risk of roof top snow ice accumulation.
How much snow a roof can hold depends on the type of snow roofline and material among other considerations.
Fluffy fresh snow can weigh as little as three pounds per square foot compared with 21 pounds for wet heavy snow according to fema.
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.
Psf pounds per square foot.
28 40 light fluffy snow.
Here are a few examples of the weight of snow on a roof.
The weather channel meteorologist mark elliot takes on a weighty subject just how much does snow weigh.
Even though we typically measure snowfall in inches or feet you ll want to think of it in terms.
How much does snow weigh.
57 pounds a square foot.
Per square foot of roof space which is beyond.
Two feet of old snow and two feet of new snow could weigh as much as 60 lbs.
All numbers are approximate.