Roof Pitch For Snow Country

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.

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. So in general the shallower pitch can be more dangerous with bigger slides. The higher the roof pitch the more often the snow slides off. I have already begun the research to build a pole barn.

Anything over a 6 12 pitch tends to make massive amounts of snow slide off the roof without warning. Cheltenham town offer pitch update installing snow guards metal estimating roof pitch determining have your flat roof and snow too sheet. Valleys dormers it seems to form a snow wedge that as david said can have impressive density and depth. Out of this snow storm an idea was conceived to create a shop that would replace the old cabin.

Alpine design basics 360niseko. Hi brian i just completed a house directly south of you in leavenworth. In the video above i explain the importance of roof pitch when it comes to snow. The conclusion was to avoid avalanches by building a 4 12 roof pitch with non sliding roofing material such as asphalt.

On june 7 2020 by jaka santuy. 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. If you are building a new roof however consider the climate to determine the correct pitch and proper materials. The total snowfall last winter was over 250 inches.

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. This will extend the life of your roof. 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.

I also share a little about why we did not build an earthship as we had planned because of the climate here. 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. 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.

Snow can certainly slide off of a 4 12 roof. The 1 4 inch per foot slope was not adequate. Anything less than 1 12 pitch is a huge mistake in snow prone. My gable roof has a pitch of 2 1 2 in 12 and two layers of asphalt shingles.

This has more to do with weather conditions than pitch.