They can be extremely low.
Flat roof shovel snow.
Snow granny recommended for you.
That means 12 inches of snow on a flat roof creates an additional r 12 of insulation that arrives at a time of year when you most need it.
Step 3 sweep surface.
If you want to play it safe do not let the snow exceed a foot or a foot and a half.
30x40 design workshop 80 308 views.
Avoid letting the shovel scrape the roof surface by laying it as flat as possible.
Here is a simple rule of thumb you can use to help if you are concerned.
Assuming your roof isn t too bumpy with seams a pusher should let you shove snow around and right off the edge with less exertion than a regular shovel requires.
Eric lui a professor of structural engineering and mechanics at syracuse university.
Its snowing outside and you are probably wondering should i shovel snow off my flat roof.
A snow pusher might work well too.
Others urge people to remove the roof snow to prevent damage later from melting snow and ice dams.
This image depicts another benefit of flat roofs.
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Here are thoughts from both sides.
Flat roofs and snow 5 myths busted duration.
Move over the entire surface of the roof to remove as much as possible.
Shovel snow off your roof if it exceeds two feet in depth.
The r value or resistance to heat flow for snow is about r 1 per inch.