When it rains, your basement can flood for a number of reasons. Gravity is the main culprit, of course, since your basement is the lowest living space in the house, but other factors are often at play.
“The answer to ‘why does my basement flood when it rains’ is complicated as there are a plethora of reasons behind basement flooding,” AdvantaClean, a structural repair company born in the aftermath of Hurricane Andrew, reported. “If you do experience water in your basement, it is crucial that you find the source and fix the problem before it gets worse.”
Water pooling around a home’s foundation — usually caused by a bout of heavy rain — is the main cause of basement flooding. Gravity pulls the water downward, leading the liquid through every crack and crevice and into your basement.
“One of the most common causes of water pooling up against a home is failure to maintain functioning eavestroughs and downspouts,” Utilities Kingston, a U.S. multi-utility provider, reported. “If those roof drainage systems fail, or freeze-up in the winter, they can cause all water from the roof to drain right beside the house and seep along the foundation wall and possibly into the basement.”