For example a roof with a 6 inch 12 pitch is one where it rises 6 inches vertically for every 12 inches of the horizontal run.
Roof pitch for homes in heavy snow.
A slow steady snow can create and even load over the entire roof.
You can enter this value either as a ratio x 12 or as an angle whichever suits you better.
Others allow a 1 4 inch slope.
The conclusion was to avoid avalanches by building a 4 12 roof pitch with non sliding roofing material such as asphalt.
Of snow you should upgrade to the 50 lb.
All of these scenarios can lead to stress on your roof.
This can result in an exceptionally heavy spot.
Intuitively this is the number of inches of snow on your roof in the place where the cover is the thickest.
A mountain home should to be able to withstand all that nature throws at it and provide its inhabitants with a warm dry sanctuary from the elements.
Metal roofing is another option that is extremely resistant to snow and ice formation with ice sliding right off.
If your roof is pitched enter the length and width of the flat area covered by the roof.
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.
In heavy snow areas where you might get 5 or 6 ft.
Of snow on the roof a 90 lb.
Another kind of best roofing material for heavy snow is metal roofing.
This can be accomplished by measuring the number of inches the roof rises vertically for every 12 inches it extends horizontally.
Some time ago an article in fine homebuilding addressed roof designs in snow country.
It is something you have to pay attention to in areas with snow.
Not to mention the dreaded ice dam.
Snow and the mountain environment are tough on everything and your home is no exception.
In areas where you might get 2 or 3 ft.
Wind driven snow can cause steep drifts in spots on your roof.
Colder days following heavy snowfall can compound the weight effect on your roof.
When we design homes in the mountains we pay careful attention to all the details of the building envelope to insure that the finished product will perform.
In general determining the pitch of an existing roof is a simple calculation.
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.
A 1 4 inch slope may work in alabama but one can expect leaks in minnesota or.
Homes in non snowy areas usually come with 20 lb.
As a result there is no worry of ice and snow building up on the roof and adding unnecessary weight and pressure.