The frost is frozen condensation from the warm air meeting the cold air and not ventilating if that makes sense.
Attic temperature in winter.
Your attic temperature should be at or near the outside air temperature if it is well ventilated and does not leak warm air into the attic from below.
For example when the temperature outside is 90 in the summer attic temperatures can easily reach 120 150.
Before changing anything on a roof vent system i always inspect the attic and look at those protruding nails.
A good sign is when you open your attic in the winter and you don t see any frost on the nails poking through.
A study of meteorological statistics from weather stations throughout canada indicate attic temperature and humidity conditions similar to those of the saskatoon area are found between the 4 900 degree day celsius and 6 600 degree day celsius lines shown on the map.
However more often than not.
If it s 90 degrees outside the attic temperatures shouldn t exceed 110 according to home inspector jamison brown of amerispec home inspection services in poquoson.
This will make your air conditioning system stay on longer to keep the home cool resulting in higher utility bills.
On most mid winter days the attic daily high temperatures are 70f or.
Quelch the heat wave.
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Install electric ventilators and attic fans which remove hot air from an attic.
Our main concern in the winter is moisture.
To head off these problems consider these options for bringing your attic s temperature down.
Whether it s 110 f or 130 f there s not much difference in the amount of heat flowing from the attic to the living space below.
Cold outdoor temperatures especially below freezing can wear on your furnace.
Ideal attic temperature and humidity settings cold outdoor temperatures affect attics.
They have thermostats that turn the fan on at a recommended preset temperature of 100 110 degrees.
And the extra heat is not just a summer concern come winter hot attic air can melt snow on the roof during the day only to refreeze when temperatures drop overnight creating ice dams that lead.
Hot summer weather poses the opposite problem for maintaining recommended attic temperatures.