Roof Pitch For Snow Country

Anything over a 6 12 pitch tends to make massive amounts of snow slide off the roof without warning.

Roof pitch for snow country.

The standing seam metal roof on this ice hockey rink leaked like a sieve a few weeks after the first snow arrived. I have already begun the research to build a pole barn. The total snowfall last winter was over 250 inches. However the larger factor is that when the sun comes out radiant heat passes through the snow is reflected outward melts the snow from underneath and causes it to slide.

Massive snow suddenly sliding off a roof sometimes kills the unsuspecting caught below it. This has more to do with weather conditions than pitch. 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. Managing snow on roofs mountain ts hendricks ture.

Anything less than 1 12 pitch is a huge mistake in snow prone. In the video above i explain the importance of roof pitch when it comes to snow. Best roof pitch for shedding snow on january 19 2020 by jaka santuy installing low slope metal roofing snow shedding and photovoltaics alpine design basics 360niseko metal roof design for cold climates shed roof pitch zacs garden. On june 7 2020 by jaka santuy.

My gable roof has a pitch of 2 1 2 in 12 and two layers of asphalt shingles. The safest way to determine the pitch of an existing roof is to measure from inside your attic using a level tape measure and pencil. This will extend the life of your roof. So in general the shallower pitch can be more dangerous with bigger slides.

Hi brian i just completed a house directly south of you in leavenworth. Out of this snow storm an idea was conceived to create a shop that would replace the old cabin. The 1 4 inch per foot slope was not adequate. Snow can certainly slide off of a 4 12 roof.

A minimum slope of 1 inch per foot is recommended in snow country. Roof pitches of 3 12 4 12 5 12 or 6 12 work best for metal buildings in snow country. If you are building a new roof however consider the climate to determine the correct pitch and proper materials. Roof pitch for snow country.

If the design necessitates a roof slope that drains onto a traffic area snow retention devices should be provided to hold the snow in place. My house has a 12 12 pitch metal roof with concealed fasteners snow never gets more than 2 inches deep before it goes flying whenever 2 roof planes meet i e. The higher the roof pitch the more often the snow slides off. Alpine design basics 360niseko.