What do burst pipes in winter typically result from?

Burst pipes during winter are primarily caused by freezing temperatures that lead to the expansion of water within the pipes. When the temperature drops significantly, the water inside these pipes can freeze and expand. This expansion exerts pressure on the walls of the pipe. Most pipes cannot withstand this pressure, which can lead to cracking or bursting of the pipe.

Understanding this process is crucial for home inspectors and homeowners alike, as it highlights the importance of insulating pipes, especially those in unheated areas, to prevent freezing. The other options, while they may contribute to plumbing issues under certain conditions, do not directly link to the winter-specific cause of burst pipes as effectively as the freezing temperature scenario does.