The Artic can get -2 °C (28 °F)
Yes, but it also lets out the hot air from the attic.
Attics are typically poorly insulated and receive little to no direct heating. Heat rises and escapes through the roof, leaving the attic space cold. Lack of proper insulation can also allow cold air to seep in, making it very cold in the attic.
So it doesn't freeze.
Because heat rises to the top and cold descends. Since the attic is higher then the heat goes up there. ( ^__^ )
Your attic won't get cold enough to freeze propane. Propane turns from a gas to a liquid at -44 degrees. If the propane line freezes, it is because of moisture that has gotten into the pipe.
Because heat rises to the top and cold descends. Since the attic is higher then the heat goes up there.
It felt unbearably hot in the attic. Christmas was unbearably cold.
No, not if it's on a heat setting. Most home thermostats have a "Fan" setting that will blow cold air if the attic is cold.
This is unknown. Call a plumber to do a visual assessment.
The noise shows that your attic is not well insulated. You need to get extra covering so the wind can not whistle through the gaps and make noises.
During cold nights, the temperature decreases causing the materials in the attic to contract. The contraction leads to structural elements such as wood or metal making creaking noises as they adjust to the temperature change.
Yes. This will prevent heat loss and condensation.