Moisture is a common problem in underground basements. Because these living spaces are located below the surface of the surrounding soil, moisture can infiltrate a basement if it has not been properly waterproofed.

There are several different methods that contractors can use when it comes to waterproofing a basement. Learn more about these methods so that you will be prepared to invest in the one that will offer your basement the most protection against moisture in the future.

1. Interior Excavation

Many contractors recommend interior excavation as a way to waterproof existing basements. This method of waterproofing requires contractors to dig a series of small trenches along the outer edges of the basement. The trenches only have to be wide enough and deep enough to accommodate the installation of drainage pipes. Any water that finds its way into your basement is filtered into the drainage system.

All drainage pipes direct excess moisture to your sump pump facility for safe removal. Interior excavation is the least invasive method of waterproofing a basement, but it may not address all types of leaks.

2. Exterior Excavation

Exterior excavation is a broad category that covers all waterproofing methods that take place on the exterior of your basement.

A contractor can use exterior excavation to correct the slope of your property so that water drains away from your home instead of toward your basement. This will help prevent leaks in your basement over time. A contractor may also suggest that you install a French drain around the exterior perimeter of your basement. These unique drains are designed to capture excess moisture in the soil outside your basement walls and direct this moisture to a pump for safe elimination.

The application of a waterproof membrane to the outer walls of your basement is another popular exterior excavation waterproofing method. A contractor paints the membrane onto the outer walls of your basement. The membrane then acts as a moisture-proof barrier to keep water out.

3. Underpinning

Underpinning is the most invasive form of basement waterproofing. A contractor must fully excavate your basement floor in order to install a fresh layer of concrete over the top. The fresh concrete covers any cracks or holes that allow moisture to seep into your basement, effectively creating a waterproof barrier between your basement interior and the soil beneath the basement foundation. Underpinning is a great option when floor or slab leaks are the primary source of moisture in your basement.

For more information about basement waterproofing projects, reach out to a local service.