Pipes can freeze and burst due to thermal expansion, which occurs when water in pipes freezes and expands. This can cause significant damage to a building's plumbing system and result in costly repairs. To prevent pipes from freezing and bursting, it's important to take steps to insulate pipes and keep them warm, as well as to be vigilant for signs of trouble and act quickly if a pipe burst occurs. By taking these steps, you can protect your home or building from the damage caused by frozen and burst pipes.