And conversely frosted areas indicate more adequate insulation.
Frost on house roof.
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An ice dam can damage both your roof and the inside of your home.
In other words the sequence might be as follows.
And here s the clincher.
An ice dam is a hump of ice that forms at the edge of a roof under certain wintertime conditions.
Once in the attic it warms the air over the living space.
That warm air makes contact with the roof deck and warms it up.
The booms that have been heard around the gta could be a result of a frost quake but it could be something else.
That water flow reduces the likelihood of roof leaks and shingle damage from hard packed snow and ice dams.
If the morning sun directly hits your home and not your neighbors lack of frost may just be attributed to the sun s heat.
Help prevent roof damage by keeping gutters and downspouts flowing even in frigid below zero temperatures.
That heat then conducts up all the way to the shingles.
Warm shingles don t allow frost to form as readily as cold shingles.
Thanks wayne 10 31.
Prevent ice dams this winter.
However if nothing is different about your home compared to your neighbors you may have a problem.
It s that time of year when we occasionally have frost on our roof tops.
A lack of frost can indicate that heat is leaking out through your attic space onto the roof and melting the frost.
Something i implied above but didn t say explicitly is that when frost forms on the roof the roof is below freezing.
Is the absence of frost an indication of heat loss thru the roof via poor insulation.
On my roof some areas will have frost and others not.