Rob McPhail of Grassroots Home Inspections Says:
In extreme cold humans get frostbite, hypothermia and windburn. Houses suffer from the cold as well. Building materials expand and contract at differing rates depending on which parts are exposed to frigid temperatures or the heated portions of the home. As a result, you will likely hear differing sounds as these materials move. Water pipes can burst & ice dams can form allowing water penetration into your home. Prepare for cold weather with regular maintenance & inspections. Reduce heat loss by sealing cracks in your home. Ensure your heating system works efficiently. Falling temperatures means your heating system use increases. If you have closed off areas in your home from heat sources, use area heaters where room temperatures drop below say 5C (41F). Unheated spaces are prone to mould growth.