Roof Pitch For Snow Country

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.

Roof pitch for snow country.

This will extend the life of your roof. In the video above i explain the importance of roof pitch when it comes to snow. Anything less than 1 12 pitch is a huge mistake in snow prone. 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.

Managing snow on roofs mountain ts hendricks ture. Valleys dormers it seems to form a snow wedge that as david said can have impressive density and depth. The 1 4 inch per foot slope was not adequate. Roof pitches of 3 12 4 12 5 12 or 6 12 work best for metal buildings in snow country.

Massive snow suddenly sliding off a roof sometimes kills the unsuspecting caught below it. Hi brian i just completed a house directly south of you in leavenworth. So in general the shallower pitch can be more dangerous with bigger slides. Out of this snow storm an idea was conceived to create a shop that would replace the old cabin.

The standing seam metal roof on this ice hockey rink leaked like a sieve a few weeks after the first snow arrived. 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 has more to do with weather conditions than pitch. 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.

Snow can certainly slide off of a 4 12 roof. The conclusion was to avoid avalanches by building a 4 12 roof pitch with non sliding roofing material such as asphalt. Alpine design basics 360niseko. A minimum slope of 1 inch per foot is recommended in snow country.

On june 7 2020 by jaka santuy. Roof pitch for snow country. The higher the roof pitch the more often the snow slides off. I have already begun the research to build a pole barn.

If you are building a new roof however consider the climate to determine the correct pitch and proper materials. Some time ago an article in fine homebuilding addressed roof designs in snow country. Anything over a 6 12 pitch tends to make massive amounts of snow slide off the roof without warning. The total snowfall last winter was over 250 inches.

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.