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Will an Interior Drainage System Make My Basement Less Humid?

An interior drainage system is an essential part of foundation waterproofing, but it isn’t the only part. Other waterproofing solutions are needed if the basement is to be kept dry and healthy.

How an Interior Drainage System Helps

Interior drainage systems are able to prevent flooding, stop leaks, and decrease the humidity levels in the basement. Standing water creates humidity, so by draining it all out, is able to improve the air quality in the foundation. The condition of your basement affects the air quality in your living areas upstairs as well, which is great for your health and the health of your loved ones.

However, interior drainage systems are not able to fully get rid of the humidity in your home. They may drain out the water and prevent moisture from permeating through the walls, but drains can do nothing about the moisture that already exists in the air. Consistent moisture control is needed because of all the surrounding groundwater, and that’s not something a drainage system can do all on its own.

Humidity Control

To control the humidity in your basement, you need a vapor barrier and a dehumidifier. A vapor barrier is a thick sheet made of polyethylene that is applied to the basement walls. The vapor barrier is impermeable, so any water vapor or moisture that attempts to get through the wall will not be able to do so. The vapor barrier guides the wall moisture so that it gets directed straight to the interior drainage pipe.

The dehumidifier, on the other hand, absorbs the moisture in the air. It gives you control over the humidity in your basement and allows you to adjust the humidity levels as needed. Ideally, you’ll want the humidity levels to be between 30 to 60 percent. The dehumidifier also can be connected to the sump pump for easy drainage.

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