If water from the thawed snow cant run down the roof and into the gutter, it will pool at the edge of the unthawed
snow on the roof.
Keep in mind that a light dusting of frost, ice or
snow on the roof can be very slippery, so if you do have to walk on the roof while you're doing this, please be very careful."
“What they often forget about is the buildup of
snow on the roof,” he explained.
Snow on the roof could fall onto windscreens and 'blind' drivers.
From tomorrow police are stopping cars with
snow on the roof pounds 60 fine and three penalty points.
The drama happened in the southern city of Katowice, and it is thought the weight of
snow on the roof caused the cave-in.
You already know that
snow on the roof of a tent can bring the tent down on top of you.
I need Ice damming occurs because hot air from living spaces leaks into the roof space and melts the
snow on the roof. The water then refreezes when it reaches the eaves, which tend to be colder than the roof because they hang over the edge.
That came about when heat from inside melted
snow on the roof. When that very cold water encountered the uninsulated roof cave, it refroze in layer after layer.
Snow on the portion of the roof that's over the warm house is likely to melt more quickly than
snow on the roof's overhang.
One contributing factor may be a lack of attic insulation: Heat rises to the attic and begins to melt the
snow on the roof, leaving water nowhere to go beyond the ice dam.
"Flat roofs may be more at risk, especially if the
snow on the roof is thawing but the drain that would normally carry it off is still frozen."
The Insurance Institute for Business & Home Safety warns that it is important to understand the risk of roof collapse due to the weight of
snow on the roof. Roof structures that are in good condition can support roughly 20 pounds per square foot.
"Rain would be the worst, since the
snow on the roofs would act like a big sponge.''