Understanding the problem
A French drain redirects water through a gravel-surrounded perforated pipe. Interior perimeter drains commonly carry groundwater to a sump system; exterior drains may reduce water pressure around the foundation. Design depends on soil, grade, discharge, foundation type, and the source of intrusion.
Common professional options
The appropriate approach must be based on an inspection. A professional may discuss:
- Interior perimeter drainage
- Exterior French drain
- Grading and downspout review
- Connection to a sump system