To understand how to prevent crawl space flooding, you need first to understand what causes crawl space flooding in the first place. In this article, we will discuss what crawl space flooding is and what causes it. We will also discuss some of the solutions available to you to prevent it from happening and mitigating the damage it might cause if it does happen.
A crawl space flood is pretty much what it sounds like, the crawl space in a home becomes flooded with water. The event usually occurs because of rainwater and or snowmelt saturating the ground around the house and that water penetrates the wall and fills the crawl space with unwanted water. The easiest way to prevent flooding is to ensure that water does not collect around the base of the home.
You must have a capable gutter system that can safely transport the rainwater away from your house as it runs down your roof. Not only do your gutters need to stay debris-free, but your downspouts need to be spouting far away enough from the base of your home. Your home is at risk for crawl space flooding if your gutter system is not working the way it should.
The Slope of the Ground
The next thing you must look out for to prevent a flooded crawl space is the slope of the ground next to your home. If the earth does not roll away from the base of your home, then you are going to have a flood in your crawl space eventually. Water flows to the lowest point so if it rains or snow melts near your house and the earth slopes towards your home, chances are high that moisture is pooling against your foundation's wall and just waiting to enter your crawl space. In that scenario, you need to create a slope of earth away from your home to stop the moisture build-up.
The next thing you can do is install a sump pump in your crawl space. This ensures that even if you do have excess moisture down there, you have the equipment to handle what could be a damaging event. A sump pump is a practical machine to have in your home if you live in an environment with high levels of moisture.