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Does a Crawl Space Need a Sump Pump?

Does a Crawl Space Need a Sump Pump?If your crawl space tends to have an excess amount of moisture and puddles of water building up under the property, then yes, we would suggest installing a sump pump. Excess moisture can lead to additional property damage like rust, mold, mildew growth and health hazards. Although, if your crawl space is only mildly damp, there are other solutions.

Before you install a sump pump or any other moisture deterrent in your crawl space, it’s important to consider how the water or moisture is showing up there in the first place. Here are some questions to ask yourself:

  • Does your property have a plumbing problem?
  • Do you live in a wet environment with lots of rain or melting snow?
  • Do you have proper drainage channels outside the property to divert any water away?
  • Are your gutters and downspouts blocked or in need of repair?


What Does A Sump Pump Do?

Sump pumps are needed in areas like basements and crawl spaces where standing water accumulates and there isn’t a way for it to drain naturally. Its job is to help keep the area dry and prevent flooding. Many homes place the sump pump at the lowest point in what is called a sump pit about 2 feet deep and 18 inches wide. As the pit fills with water, the pump will automatically turn on with a float activator or pressure sensor. In a crawl space, water flows into the sump pit through drains or by natural water migration through the soil. Afterwards, the water is discharged from the space to an area outside that is away from the foundation.


Other Crawl Space Solutions

Sometimes a crawl space will only have small traces of moisture. For example, on a humid summer day, there may be condensation on a pipe. In these cases, a sump pump may not be needed but it would be helpful to cover the crawl space with a plastic moisture barrier. Overlap any seams with tape and bring the plastic about 6 inches up the wall. Lastly, depending on your region, be sure to close any vents to control the moisture.

Whether you have a large or small amount of moisture in your crawl space, it’s important to properly investigate where the water is coming from. Doing so could save you a lot of money in the long run and an addition of a sump pump or a plastic moisture barrier could offer you peace of mind.

Resources found on our website are provided as general guidelines, and Raby Plumbing does not assume any liability resulting from the provided information.

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