Plus the weight of snow varies depending upon the.
Roof construction and snow rain.
The increase in weight can get dramatic.
The problem with rain or wet snow following a deep snowstorm is that the rainwater doesn t pour off of the roof.
1 asphalt shingles these kinds of roofs are rampant across the northern part of the us largely due to their ability to withstand cold climate elements like wind snow and heavy rain.
The rule of thumb for span is 1 inch high for 1 foot of run span.
It gets trapped in the snow.
A reputable contractor keeps tabs on the weather and won t begin installing a roof if it s raining or expected to rain.
Snow followed by rain is one of the worst combinations for roofs.
Doing so puts workers at risk of falling off a wet roof and unnecessarily exposes your home to damage for which they may be held liable.
Structural engineers at summit engineering are cautioning homeowners throughout new england to be aware of the dangers any time there is a winter mix of snow and rain on the horizon.
Ice dams which form on the eaves of sloped roofs and block melting snow from draining off the roof can lead to a significant amount of damage if left unchecked the most expensive being wet.
The best roof for rainy climate varies from asphalt shingles slate and or pitched roof.