As a general rule, for your home's water pipes to freeze, the outside temperature must be below 20 degrees, for a total of at least six consecutive hours. As a general rule, outdoor temperatures must drop to at least 20 degrees or lower for pipes to freeze. In Nordic climates, where temperatures regularly drop below freezing, modern houses tend to be well insulated and water pipes are located in the interior parts of the house for greater protection. In old houses, this is not always the case.
In southern climates, severe frosts can be more problematic because the houses there aren't built to withstand cold temperatures. Many factors contribute to how quickly a pipe freezes, but water supply lines start to freeze when the temperature reaches 20 degrees. Central heating in a house is usually more than adequate to prevent all interior pipes from freezing. But when the power goes out, the temperature inside the house can drop rapidly.
We all know that freezing starts at 32° F or 0° C, but at what point do the pipes inside our own homes freeze? Pipes can freeze at 32 degrees or lower, but this will take an extended period of time to occur. In other words, a pipe must be at sub-zero temperatures for at least half a day before homeowners have to worry about a freeze occurring. And, generally speaking, the temperature must be well below 32 for at least that period of time before it is likely to freeze. You may think that pipes freeze at one temperature and explode at another, but this is not entirely correct.
Look, in most cases, water pipes will start to freeze when the temperature is within the range of twenty to thirty-two degrees Fahrenheit. For example, houses built in northern areas are usually constructed in such a way that the pipes were initially protected from the cold and, therefore, prevented from freezing, especially in areas where the temperature tends to drop well below freezing in winter. However, keep these tips in mind and you'll be more than prepared to prevent your pipes from freezing and keep water flowing this winter. And, of course, if winter temperatures tend to drop well below freezing in the area where you live, the pipe collapse will approach even sooner.
Recently, winter storms have spread across the country, leaving many Americans facing sub-zero temperatures without electricity. While it can be assumed that homeowners in the north would be more vulnerable to frozen pipes, homebuilders have also prepared pipes in warmer climates for these freezing winters. It may seem to you that the pipes found inside are much less likely to freeze and, therefore, to burst in winter. Sprinkler pipes are much more likely to freeze in winter, as they are constantly exposed to cold.
Fortunately, there are plenty of options for keeping pipes warm throughout the house and elsewhere on your property. So, if you live in an area with severe winters and frosts, keep in mind that the outer pipes can already start to freeze at 20 degrees Fahrenheit. In fact, homes in warmer climates are at greater risk of pipes breaking due to sub-zero temperatures, as severe winter weather occurs less frequently in southern parts of the U.S. UU.
This is because if you have severe winters with temperatures lower than below zero, your pipes will collapse much faster. .