Because digging the trench can be difficult work on your own, get friends and family to help if possible. Once the trench is complete, installing a French drain is a straightforward process. The new drain will get runoff water under control, protect your basement and keep your yard from becoming a swamp.
How deep should a French drain be dug?
French drain depth: About 8 inches to 2 feet deep should be sufficient for many water-diverting projects, though related systems, such as those built around foundations and sub-ground living spaces, as well as the bases of retaining walls, may be deeper.
What are the 10 steps to installing a French drain?
Steps for Installing a French Drain System in Your Yard
Step 1: Make a plan for your new French drain system. Step 2: Mark the location. Step 3: Call 811. Step 4: Determine the slope. Step 5: Break ground. Step 6: Lay the landscape fabric. Step 7: Line the trench with gravel. Step 8: Place the corrugated pipe.
Does a French drain need an outlet?
A properly designed French drain system does not require an outlet. The water will simply soak into the soil as it flows along the perforated pipe. In fact, a French drain doesn’t require an inlet on just one end either. You can construct the drain to accept water along its length, and disperse it underground.
Does a French drain need a pipe?
Officially a French drain is a gravel drain with no pipe. The water just collects in and travels through in a gravel or stone filled channel that starts from the surface or just below it.
Why do french drains fail?
Over time, a French drain may become clogged. Tiny soil and clay granules slip through the pores of the landscape fabric and gradually build up inside the pipe. Another common cause of French drain clogs is root intrusion from grass, shrubs, and trees.
How do you end a French drain?
End the French drain at a low-lying water source, such as a pond or lake, if you have one on your property. If you do end your French drain at a pond or lake, make sure the opening of the French drain sits above the water level. The water will roll down the drain and empty harmlessly into the water.
Can I cover a French drain with dirt?
Can I cover a French drain with dirt? Because a French drain has holes throughout the pipe which allow it collect water, you should not install dirt on top of the drain pipe. Installing dirt will clog the pipe and the holes, rendering it useless.
How do I put drainage in my yard?
5 Yard Drainage Solutions You Can Do Yourself
Reduce Your Watering Schedule. Extend Your Downspout. Dig a Creek Bed or Swale. Construct a Rain Garden. Install a French Drain and/or Dry Well.
What is the difference between a French drain and a trench drain?
Aside from what we’ve listed here, the difference between a French drain and a trench drain is that a French drain is used for water that is underground while a trench drain diverts excess water from a surface.
How much gravel do I need for a 50 foot French drain?
To calculate gravel needed for a 50′ french drain, multiply the length of the trench by the width and depth. If you plan to lay down 4 inches of gravel, multiply 50 feet x 4 inches = 200 cubic feet.
How do I dig a French drain around my house?
How to Install a French Drain
Call the 811 hotline to have underground utilities marked.Dig the trench system.Line the trench with landscape fabric. Add 2 to 3 inches of gravel to the bottom of the trench.Lay the drain pipe in the trench, with the drain holes facing down.
What is the best pipe to use for a French drain?
Black corrugated pipe is most commonly used for gravity flow water management, including: – storm drainage (this includes French drains)
Where does French drain drain to?
French drains provide an easy channel for water to flow through. Water runs into a gravel-filled trench, then into perforated pipe at the bottom of the trench. Water travels freely through the pipe, which empties a safe distance from the house.
How deep should a 4 inch French drain be?
DIGGING A TRENCH FOR A FRENCH DRAIN
Because there is a direct relationship between the diameter of a drain pipe and its relative effectiveness, make your trench no smaller than 12 inches wide, and aim for a depth between 18 and 24 inches.
What size gravel is best for French drain?
Gravel used for this layer is typically 1/2 inch to 1 inch across — the larger it is, the better the water flow and less chance of clogs and blockages. For a French drain without a perforated pipe, opt for even larger gravel, such as 1 1/2 inches across.
