Removing water from under a foundation is crucial for preventing structural damage and maintaining the integrity of your home. Several effective methods can be employed to manage and divert water away from this critical area.
Based on common practices and the provided reference from April 9, 2020, key strategies involve drainage systems and moisture barriers.
Effective Methods to Address Water Under Foundations
Managing subsurface water requires addressing both the source and the path of water flow. Here are primary techniques used:
1. Install French Drains
A French drain is a widely used solution for diverting subsurface water. According to the reference, this system consists of:
- A trench dug around the foundation or in areas where water accumulates.
- A perforated drain pipe laid at the bottom of the trench.
- Gravel surrounding the pipe to facilitate water collection and flow.
Water seeps into the gravel, enters the perforated pipe, and is carried away from the foundation to a suitable discharge point (like a sump pump, storm drain, or drainage ditch).
2. Install a Moisture Barrier
Moisture barriers are installed to prevent water from migrating towards or under the foundation. As noted in the reference, these barriers hinder or stop moisture from moving from one place to another.
- They can be applied to foundation walls (exterior or interior).
- Materials vary, including liquid coatings or sheet membranes.
- By preventing moisture from reaching the foundation, they help keep the area under it drier.
3. Install Area Drains
While the reference briefly mentions Area Drains, they typically involve collecting surface water before it can reach and potentially seep under the foundation.
- These are often grate-covered inlets placed in low-lying areas of the yard, patios, or driveways.
- They connect to underground pipes that carry collected surface water away.
4. Install Swales
The reference also includes Swales as a method. Swales are landscape features designed to manage surface water flow.
- They are shallow depressions or channels created in the ground.
- Often gently sloped and vegetated, they guide surface runoff away from structures.
- By controlling where surface water goes, swales reduce the amount of water that can potentially saturate the soil near or under the foundation.
Utilizing a combination of these methods, depending on the specific site conditions and water source, often provides the most comprehensive protection against water intrusion under a foundation. Consulting with a drainage professional is recommended to determine the best approach for your property.
