French Drain Pipe: Perforated Drainage Pipe for Yard Water Management (2026)
French drain pipe is perforated PVC or corrugated polyethylene pipe used in subsurface drainage systems to collect and redirect groundwater away from foundations, yards, and low-lying areas. The pipe is surrounded by gravel and often wrapped in filter fabric to prevent clogging from soil intrusion.
Key Features
- Perforated for water collection; 4" diameter standard residential; Rigid PVC and flexible corrugated options; Available with filter sock pre-installed; Easy snap-together fittings
Specifications
Applications
- Foundation drainage and waterproofing; Yard drainage for soggy areas; Retaining wall back-drain; Driveway edge drainage; Downspout discharge drainage
Installation Overview
Dig trench 12-18 inches wide and 18-24 inches deep with slope toward discharge point (1% minimum). Line trench with filter fabric. Add 2 inches of gravel. Lay pipe with holes facing down. Fill with gravel to within 4 inches of surface. Wrap fabric over top. Cover with soil or sod.
Pros & Cons
Pros
- ✓ Effectively redirects groundwater; Prevents foundation water damage; Relatively simple DIY project; Long-lasting solution when properly installed
Cons
- ✗ Requires significant trenching; Must maintain proper slope throughout; Can clog without proper filter fabric; Rigid PVC requires more fittings
Top Brands
Code Requirements
Must discharge to approved location (not onto neighboring property). Minimum 1% slope required. Foundation drains per IRC R405. Check local codes for discharge requirements.
Buying Tips
Use rigid PVC for permanent foundation drains and corrugated for yard drainage; Always use filter fabric or pipe sock to prevent clogging; Maintain at least 1% slope (1 inch per 8 feet) toward the discharge point