Solve Yard Drainage Problems Like a Pro
Yard drainage issues can lead to pooling water, basement leaks, and even foundation damage over time. If you’re tired of soggy soil, standing water, or water creeping into your crawl space, a French drain might be the perfect solution—and you can install it yourself with some planning, the right tools, and a bit of elbow grease.
In this article, we’ll walk you through the step-by-step process of building a French drain using gravel and landscape fabric—two critical components available locally from Kirk Allen Landscape Supply. Whether you’re a weekend warrior or a homeowner just trying to protect your property, this beginner-friendly guide has you covered.
What Is a French Drain?
A French drain is a simple but effective drainage system that redirects surface or groundwater away from an area. It typically consists of a gravel-filled trench containing a perforated pipe that helps move water to a safe discharge point—like a dry well, ditch, or storm drain.
The gravel allows water to percolate down into the pipe while filtering out sediment and debris, making it one of the most efficient and long-lasting drainage solutions for homes and landscapes.
When Do You Need a French Drain?
If you notice any of the following, it’s time to consider installing a French drain:
- Persistent puddles or swampy areas in your yard after rain
- Water pooling around your home’s foundation
- Wet spots along walkways or driveways
- Basement dampness or flooding after storms
- Erosion in landscaped beds or near patios
Installing a French drain can help preserve your home’s structure, prevent mold and mildew, and protect your lawn and hardscape.
Tools and Materials You’ll Need
Before you start digging, gather the following supplies:
Tools:
- Shovel or trenching tool
- Level
- Wheelbarrow
- Landscape rake
- Utility knife or scissors
Materials (Available at Kirk Allen Landscape Supply – Call 973-347-3117):
- Washed gravel (¾” or larger is ideal)
- Perforated drain pipe (4-inch flexible or rigid PVC)
- Landscape fabric or filter fabric
- Drain outlet or dry well (if needed)
- Pipe connectors or couplings
- Marker spray paint or string line (for layout)
Step-by-Step Guide to Building a French Drain
Step 1: Plan and Mark the Drain Path
First, identify where the water collects and where you want it to go. The drain should run downhill to use gravity to your advantage. Use spray paint or string to outline the trench path. A typical trench is 6 inches wide and 18-24 inches deep.
Pro Tip: Check with local utilities before digging. Call 811 to avoid hitting gas, water, or electrical lines.
Step 2: Dig the Trench
Using a trenching shovel or spade, dig along your marked path, keeping the slope at about 1 inch drop per 10 feet. The slope is essential for the water to flow away naturally. As you dig, place the soil in a wheelbarrow for easier disposal or reuse in landscaping.
Step 3: Add Landscape Fabric
Line the trench with filter fabric or landscape fabric, leaving enough excess on either side so it can be wrapped over the top of the gravel layer later. This helps prevent soil from clogging your drain over time.
Step 4: Add a Layer of Gravel
Pour a 2–3-inch layer of washed gravel into the trench to create a stable base for the pipe. This allows water to collect and flow freely around the pipe.
Step 5: Lay the Perforated Pipe
Place the perforated drain pipe (holes facing downward) on top of the gravel bed. Ensure it follows the slope of the trench and is continuous from start to finish. Use couplings if needed to connect sections.
If you’re redirecting to a storm drain or dry well, make sure the pipe connects securely to the outlet point.
Step 6: Cover with More Gravel
Add more gravel on top of the pipe until it’s at least 2–3 inches below ground level. This top gravel layer improves water infiltration and helps anchor the pipe in place.
Choose high-quality, clean gravel from Kirk Allen Landscape Supply. Avoid using small or mixed stone that could trap sediment.
Step 7: Wrap and Backfill
Fold the landscape fabric over the top of the gravel layer to completely encase the system. This barrier prevents dirt and roots from entering the gravel bed and blocking the flow.
Finally, backfill the trench with the soil you removed—or top it with sod, mulch, or decorative stone depending on the location.
Maintenance Tips for a Long-Lasting French Drain
A properly installed French drain requires minimal maintenance, but here are a few best practices:
- Keep debris away from the drain outlet
- Avoid driving over the drain path (unless buried deep)
- Inspect annually during heavy rain for clogs or backups
- Flush the pipe if water flow slows significantly
If you’re using your French drain to protect your home foundation or basement, periodic checks can give peace of mind during major storms.
Why Gravel Is Key to a Successful French Drain
Gravel does more than just hold the pipe in place. It creates the ideal environment for water to percolate and flow while filtering out sediment and debris. Without gravel, your French drain will likely clog and fail quickly.
At Kirk Allen Landscape Supply, we carry washed gravel in various sizes, ideal for French drains and other drainage applications. Need help picking the right type? Call our team at 973-347-3117 and we’ll guide you.
Order Your Gravel and Supplies Online
Ready to get started? Kirk Allen Landscape Supply makes it easy to order gravel, landscape fabric, and more online. With fast local delivery and quality bulk materials, we’re your one-stop shop for DIY drainage projects in Northern New Jersey.
Not sure how much gravel you need? Use our free gravel calculator on the website or give us a call.
Final Thoughts
Building a French drain with gravel may sound like a big project, but with the right materials and a solid plan, it’s completely doable—especially when you have a trusted local supplier like Kirk Allen Landscape Supply.
Drainage issues don’t fix themselves. Whether it’s puddles on your lawn or water in your basement, a French drain can be a lasting solution. So grab your shovel, pick up some gravel, and take the first step toward a drier, healthier yard.
Need Supplies or Advice?
📍 Visit us at kirkallenlandscapesupply.com
📞 Call 973-347-3117 for expert help and local delivery options
