Water is Asheville's #1 property threat. With nearly 4 feet of rain per year and mountain slopes directing runoff straight at foundations, drainage isn't optional — it's essential.
Terra Builders AVL specializes in French drain systems designed specifically for Western NC's clay-heavy soil and steep terrain. We've spent 17 years solving water problems that other contractors walk away from.
Common Drainage Problems in Asheville
Standing Water in Yards — Clay soil doesn't drain well. After rain, water pools and kills grass, creates mosquito breeding grounds, and slowly damages foundations.
Wet Basements & Crawl Spaces — Mountain homes are especially vulnerable. Water follows the path of least resistance, and that's often through your foundation walls.
Hillside Erosion — Runoff from uphill properties can wash away landscaping, undermine retaining walls, and redirect water where you don't want it.
Driveway Washout — Gravel driveways on mountain properties take a beating. Proper drainage keeps your driveway intact.
Our French Drain Solutions
Perimeter French Drains — Installed around foundations to intercept groundwater before it reaches your basement or crawl space. We use 4" perforated pipe wrapped in filter fabric, bedded in clean gravel.
Yard Drainage Systems — Channel surface water away from problem areas. We grade to create natural flow paths supplemented by underground drainage.
Curtain Drains — Installed uphill from your home to intercept water flowing down the mountain before it ever reaches your property.
Downspout Drainage — We tie your gutter downspouts into underground drainage to carry roof water far from your foundation.
Why Professional Installation Matters
A French drain is only as good as its installation. Get it wrong and you're worse off than before:
- Proper grade — Minimum 1% slope toward discharge point. We laser-level every run
- Correct depth — Below frost line and below the problem area
- Filter fabric — Prevents soil migration that clogs pipes within 2-3 years
- Clean stone — We use washed #57 gravel, never recycled fill
- Smart discharge — Water has to go somewhere legal and effective
After Hurricane Helene
When Helene hit Asheville, we spent 18 straight hours doing emergency drainage work for homeowners whose properties were flooding. We know what mountain water can do, and we know how to fight it.
