French Drain Installation Los Angeles | The FND Repair

We provide French drain installation, subsurface drainage and groundwater management solutions for homes throughout Los Angeles experiencing saturated soil, foundation water intrusion, standing water, hillside runoff and poor drainage conditions during heavy rain. Our systems are designed to help collect and redirect groundwater away from foundations, crawlspaces, basements and other vulnerable areas of the property. 

• Saturated soil around the foundation
• Water collecting along foundation walls
• Standing water after heavy rain
• Poor yard drainage
• Crawlspace moisture
• Basement groundwater intrusion
• Hillside water movement
• Hydrostatic pressure buildup
• Failed or undersized drainage systems

• Site and drainage inspection
• Elevation and discharge evaluation
• Trench excavation
• Filter fabric installation
• Drainage gravel installation
• Perforated drainage pipe
• Additional gravel and filtration
• Connection to solid discharge line
• Gravity discharge when possible
• Sump pump connection when needed
• System testing and final evaluation

French drains are designed primarily to collect groundwater and subsurface moisture within the soil, while surface drains and catch basins collect water flowing across patios, walkways and landscape areas. Depending on the property, both systems may be used together to help control water before it reaches the foundation or other vulnerable areas. 

When the property has sufficient natural elevation, French drain systems may discharge by gravity through a solid drainage line. When natural elevation is not available, the drainage system may need to terminate at a sump pump pit so groundwater can be pumped to an appropriate discharge location. 

A French drain is a subsurface drainage system typically consisting of perforated drainage pipe, gravel and filter fabric installed within a trench to help collect and redirect groundwater.

French drain water may discharge by gravity through a solid drainage line or into a sump pump system when natural elevation is not available.

The proper depth depends on the water source, foundation depth, existing elevations and the specific drainage conditions of the property.

French drainage may help reduce groundwater accumulation and saturated soil around foundations by collecting and redirecting subsurface water away from the structure.

French drains primarily address subsurface groundwater, while surface drains collect water flowing across the ground. Many drainage problems require a combination of both systems.

Yes. When gravity drainage is not possible, a French drain system may discharge into a sump pump pit so collected groundwater can be pumped away from the property.