Water will run down the roof and can freeze at the eave which is cooled from the underside figure 5.
Snow melting on roof above bathroom.
Snow catchers at the base of metal roofs hold back sliding snow near the eaves.
Sometimes when it s raining and even when it was below freezing snow outside we ve had water dripping inside a bedroom window.
Causing plaster around window to bubble and creating bubbles and cracks in the paint in the ceiling below.
If it has then the black flies have arrived.
Most of the houses in my neighborhood have this heat loss issue.
However i suspect that your snowmelt problems may be deeper than just an omitted roof vent especially because you said that melting occurs even when the fan is not operating.
It might be blocked.
With the snow that roof is probably too dangerous to walk on so i m sure you did not look down the vent with a flashlight.
It might not be.
How the snow melts on your home s roof provides clues to attic insulation needs.
See pics the original stack was made of copper and only extended 6 inches off the roof.
Exposed shingles or metal can easily be heated to 70 f 40 c above ambient air temperature and cause melting of the snow immediately next to the exposed roofing.
It s a slight dormer window in a sloped mansard second story roof.
Snow disappears quickly from roofs above attics with little or no insulation but will stay a long time when.
Warmlyyours ice shield roof gutter deicing cable system provides a reliable solution for ice damming that occurs in gutters downspouts overhangs valleys and bottleneck areas between roof features such as dormers or adjacent rooflines.
Another part of your dripping problem may be the way the vent pipe is routed.
Ice and snow accumulating on your roof or inside your gutters can cause costly water damage to your home or business.
Has the snow melted yet.
A couple of eye hooks on each side to hold the board in place or maybe some short pieces of 1x2 with a screw through the middle that you can rotate to horizontal.
The pipe exits the roof above the right side of the bathroom window as shown in the pics below.
It seems that when the snow melts why does the snow on the roof melt here.
Definitely coming in from above as we can see the water dripping from the top of the.
Paint the out side to prevent water damage from the melting snow and make sure it fits snugly.
Venting through the soffit is probably your best option.
That one just above the lower roof looks especially susceptible to it.