Roofing material for snow
Last Post 02 Aug 2010 01:03 PM by cone. 5 Replies.
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coneUser is Offline
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12 Jul 2010 05:52 PM
What roofing material works best for high snow loads?
Dana1User is Offline
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14 Jul 2010 12:04 PM
What's the roof pitch?

If it's 4/12 or steeper, standing seam metal tends to shed snow nicely (but be careful about the what's in the avalanche paths, since it sometimes comes down all at once.) At somewhat lower pitches it'll still shed snow, but over days/weeks, with little roof-avalanche potential. In places where you need to keep the snow from slliding (say, overhangs on a deck or walkways where it could present a hazard) "snow-guards" can be installed to keep the snow in place.

Any roofing material on a roof with pitches higher than ~7/12 can present sudden-avalanche hazards in high snow regions unless some sort of anchoring system is in place to keep the snow up there, but with steep roofs the snow buildup will be less than with most other materials, making those releases less dangerous. (But small children can be easily buried, if playing in the yard in the target zone.) To guarantee that the snow releases before any substantial buildup can occur requires roof pitches over 15/12.

Slate also tends to release snow well- anything smooth & relatively hard gives it a sliding surface to work with, minimizing the need to get up there with a shovel to keep the roof loading under control.
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14 Jul 2010 04:14 PM
Perhaps someone needs to create UHMW plastic covered steel roofing (UV stabilized of course). Almost as slippery as teflon.


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14 Jul 2010 04:16 PM
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BigrigUser is Offline
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16 Jul 2010 02:57 PM
Posted By jonr on 14 Jul 2010 04:14 PM
Perhaps someone needs to create UHMW plastic covered steel roofing (UV stabilized of course). Almost as slippery as teflon.




Can you imagine trying to do any work on a roof like that? Trying to access a chimney or solar collector would be quite a challenge. It would be worth it on my current house just to see the squirrels go sliding off!
coneUser is Offline
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02 Aug 2010 01:03 PM
Has anyone dealt with building a cold roof to keep the snow on the roof in a new construction in a high snow area above 9,400 ft.? I am interested in the cold roof construction. Please advise
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