Drainage Systems That Protect Your Foundation Investment

Water is the single greatest threat to commercial foundations in Dallas. Expansive clay soils absorb water, expanding dramatically when wet and shrinking when dry. Without proper drainage, water pools against foundations, saturates soil unevenly, and creates the differential movement causing foundation failure. FCS has designed and installed commercial drainage in Dallas for over 25 years.

Systems We Install

  • French Drains — Subsurface systems intercepting groundwater before reaching foundations
  • Surface Drains — Catch basins for parking lots, courtyards, and low areas
  • Channel Drains — Linear drainage for loading docks, entries, and drive aisles
  • Area Drains — Point collection for concentrated drainage areas
  • Downspout Extensions — Routing roof drainage away from foundations
  • Grading and Swales — Site regrading to direct water from buildings
  • Sump Pump Systems — Active drainage where gravity drainage is insufficient

Why Drainage Is Critical for Dallas Commercial Properties

Dallas averages 37 inches of rainfall annually, much in intense storms. Large roof areas concentrate water at building perimeters through downspouts. Without drainage to move it away quickly, it saturates clay soil and triggers expansion causing foundation movement. Subsurface French drains intercepting water before deep penetration are the most effective defense.

Frequently Asked Questions

Should drainage be installed before or after foundation repair?

Ideally together. Foundation repair stabilizes the building, drainage prevents conditions that caused movement. Combining both provides the most comprehensive solution.

How deep are commercial French drains?

Typically 18-36 inches depending on soil conditions and depth needed to intercept water before reaching the foundation bearing zone.