Winter storm central.
Snow melt patterns on roof.
If your attic insulation needs a fix the pattern will be patchy.
The patterns relate to attic insulation.
On frosty and snowy mornings melt patterns will become readily visible.
Place this vertically on your roof near the edge so it will melt a section of snow and ice creating an area where the water can leak off.
Gently toss the tied off pantyhose onto the edge of your roof to begin melting the snow.
When snow begins to gradually melt off a roof vehicle or other outside structure you might occasionally see some odd patterns develop.
If your attic has little or no insulation the snow will disappear quickly.
The differences from house to house new or old can be very impressive.
Because the snow is melting from a heat loss on your roof and not because of warming temperatures the melted snow can refreeze once it travels from your roof creating ice dams that appear as icicles on the eaves and gutters.
Besides wasted heat melting snow on roofs can mean ice dams where snow melts in a warmer spot on the roof and then freezes when it hits the cold eaves.