This house is good news and bad news.
If snow stays on roof does that mean good insulation.
The best snowstorm for these observations will.
The good news is that it is beautifully restored and from the 18th century but the bad news is the owner is paying to melt the snow on his roof.
According to one anecdotal source a snowfall that measures about 0 07 inches in density or seven percent water volume has about the same insulation value as a standard batt of fiberglass insulation with an r value of 18.
If your roof gets a decent amount of snow on it make sure it s not melting in specific spots.
That means there s heat loss likely due to poor insulation and or ventilation in the attic.