Closer building in foreground is unheated thus no odd pattern.
Frost on roof means.
It s this very melting and refreezing process that causes ice dams in the first place.
This simple answer is that the attics with no frost are warmer.
Frost is caused by moisture that escapes up through attic bypasses then condensing on the roof boards and rafters.
In other words the sequence might be as follows.
Because they were running the heat to keep the house warm.
2 the car roof cools radiatively.
However if nothing is different about your home compared to your neighbors you may have a problem.
26f degrees nov 19 2014 6 45 am.
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.
A lack of frost can indicate that heat is leaking out through your attic space onto the roof and melting the frost.
Over the living space the roof has little smatterings of frost but is largely devoid of the frozen stuff.
Frost on roof it s that time of year when we occasionally have frost on our roof tops.
1 initially the air and the car are at temperature 37 f and the dew point is 35.
Small icicles along the edge of your roof.
Plus heat wants to go up.
But they do mean snow is melting on your roof and that some of the runoff is freezing into icicles as it trickles off the edge of your roof.
If the morning sun directly hits your home and not your neighbors lack of frost may just be attributed to the sun s heat.
Warm attics also show the outline of the rafters underneath the roof deck as the escaping heat going as heat does to where heat isn t melts the frost.
They are warmer because the attic is either poorly ventilated or poorly insulated or a combination of both.
What does it mean.
Gulf coast of mississippi.
What can you do about it.
Ice and water protector sometimes also referred to as ice and water shield is a waterproof roof underlayment membrane developed to protect vulnerable areas on a roof from ice and water damage.
On my roof some areas will have frost and others not.
Is this a problem.
Icicles don t always mean ice dams.