The minimum roof pitch for shedding snow is around 30 or a 6 12 or 7 12 slope although this is not a definite as the material of your roof the direction of the snow and wind are some factors that can affect whether or not snow will slide as roofs of as little as 10 have been reported to shed snow.
Roof pitch for snow country.
If these issues are addressed during the design stage and the roofing contractor does his job these systems will almost always perform as intended.
Roof design in heavy snow country.
I also share a little about why we did not build an earthship as we had planned because of the climate here.
If your roof is pitched enter the length and width of the flat area covered by the roof.
The purpose of pitching a roof is to enable water and snow to run off so the greater the amount of rain and or snow an area receives the greater the amount of pitch needed for the roof.
My gable roof has a pitch of 2 1 2 in 12 and two layers of asphalt shingles.
As a result there is no worry of ice and snow building up on the roof and adding unnecessary weight and pressure.
The total snowfall last winter was over 250 inches.
If water does not properly run off of a roof it will begin to seep in causing rot interior damage and possibly dangerous black mold.
I have already begun the research to build a pole barn.
You can enter this value either as a ratio x 12 or as an angle whichever suits you better.
Another kind of best roofing material for heavy snow is metal roofing.
Out of this snow storm an idea was conceived to create a shop that would replace the old cabin.
Intuitively this is the number of inches of snow on your roof in the place where the cover is the thickest.
A minimum slope of 1 inch per foot is recommended in snow country.
In the video above i explain the importance of roof pitch when it comes to snow.
I am thinking of removing the two layers of shingles and installing trusses on the present roof deck to increase the roof pitch so that snow would slide off a metal roof.
The key factors are usually snow loading requirements adequate slope and the use of snow guards when needed.