Drainage Solutions to Protect Your Retaining Wall from Water Damage

Gravel Backfill

Filling the area directly behind the retaining wall with crushed stone or gravel improves drainage. Unlike dense soil, gravel allows water to flow freely through the material and into drainage channels or pipes. A well-graded gravel layer at least 12 inches thick will prevent water buildup and improve the wall’s overall stability. Often, a layer of landscape fabric is placed between the gravel and the native soil to keep the drainage layer clear of debris and silt over time.

French Drains

A French drain is a perforated pipe installed at the base of the wall that collects and redirects water away from the structure. It’s surrounded by gravel and wrapped in filter fabric to prevent clogs. French drains are particularly useful for larger retaining walls or areas with poor natural drainage. They ensure that groundwater and rain runoff are managed efficiently.

Drainage Pipes and Outlets

Drainage pipes work similarly to French drains but are sometimes used in conjunction with weep holes or gravel backfill to move water even more efficiently. These pipes are routed behind or beneath the wall and channel water to a safe discharge area, such as a storm drain, dry well, or lower portion of the yard. Installing drainage outlets at strategic locations allows water to escape quickly.

Proper Grading and Surface Drainage

Good drainage doesn’t stop at the wall; it begins at the surface. The land around your retaining wall should be graded so that water naturally flows away from the wall instead of toward it. Redirecting roof runoff, downspouts, and irrigation systems can also help prevent water from pooling near the base of the structure.

Proper drainage protects your retaining wall and the surrounding landscape. Even the strongest materials obtained from a reputable precast company and the best construction techniques will eventually fail. Water damage is not only expensive to repair but can also create safety hazards and lead to property loss.

Contact Garrett Precast Today for High-Quality Retaining Walls

Garrett Precast is the company to call when you’re looking for high-quality and affordable concrete precast products. We have built ourselves a name for delivering high-quality and affordable products. From retaining walls and lift stations to grease trap tanks, septic tank lids, and Infiltrator products, we’ve got you covered. Contact us today to book a consultation and learn more about the concrete products we provide.