Apparently a lot of people do! http://en.wikipedia.org/wiki/Roof#Drainage http://en.wikipedia.org/wiki/Roof#Drainage The high steeply-pitched roofs of Germany

Apparently a lot of people do! http://en.wikipedia.org/wiki/Roof#Drainage http://en.wikipedia.org/wiki/Roof#Drainage The high steeply-pitched roofs of Germany and Holland are typical in regions of snowfall. In parts of North America such as Buffalo, USA or Montreal, Canada, there is a required minimum slope of 6 inches in 12 inches, a pitch of 30 degrees.