Attic flies common this winter by donald lewis department of entomology the large black pesky flies that show up in bed rooms and on window sills from late fall through early spring have been very abundant this year possibly because of the wetter than normal weather we had last summer.
Attic cold in fall.
The biggest issue is attic rain.
According to the u s.
Small attic vents located below the roof peaks provide sufficient ventilation to let the moisture created by heat rising into the.
If your attic is too cold it probably lacks sufficient protection from outside temperatures.
Good attic ventilation helps keep temperatures even preventing hot and cold spots that cause damaging ice dams where water can back up and freeze beneath your shingles.
During cold winter months the attic vent fan is not necessary.
Adequate attic ventilation allows cool dry air from outside to come into the attic while warm moist air inside the attic can escape.
A phenomenon caused by prolonged cold spells and improper ventilation.