How to create a french drain

How deep should French drain be?

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.

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.

What can I do instead of a French drain?

A French drain is an underground trench filled with stones and topped with sand and can even be covered with lawn, shrubs, or a flower bed.

  1. Valleys. Valleys are a French drain alternative that will work very similarly to how a French drain does.
  2. Adding Steps.
  3. Dry Wells.
  4. Add a New Garden Area.

Is a French drain worth it?

If you’re dealing with a wet basement or a soggy lawn, you might want to look into installing a French drain. While it’s not necessarily a “quick fix,” a French drain can be a smart investment to keep your home and yard dry.

Can you 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.

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 tell if a French drain is clogged?

Step 2: Use a garden hose to run water down the French drain. If you notice the water backing up instead of running straight through, it’s clogged. Step 3: Use a pressure washer to unclog the drain, which will use high pressure to send water down the drain.

How do I find a French drain outlet?

How do you close a French drain underground?

How do you find underground drain lines?

Rent a pipe locator from a tool-rental company. These radar devices are relatively user-friendly—typically, turn it on and roll the device across the ground where you think the pipe may be buried. The screen will display possible pipes; audio-only versions will make a distinct tone when possible pipes are located.

Where does my underground gutter drain go?

How Underground Downspouts Work. Downspouts that run into an underground system are sometimes called French drains. They typically disappear into the ground and the water travels through a pipe made of clay, plastic PVC or perforated plastic pipe.

Should you bury your downspouts?

The trench should be at least 6-inches-wide and slope down slightly (1 to 2 inches per length of pipe) so water drains away from the downspouts. Tip: The only guaranteed way to keep the pipe from freezing is to bury it below the frost line, which ranges between 32 and 48 inches in most areas of the snow belt.

How deep should I bury my gutter drain pipe?

I usually dig a trench about 12 to 14 inches deep for downspout drain lines. If the lot is fairly flat, the pipes will get deeper the farther they extend, as you should create 1/8 inch of fall for every foot the pipes run.

What is the best pipe to use for underground drainage?

Material. Polyvinyl Chloride pipes are the most commonly used pipes for any drainage project.

How long will PVC pipe last underground?

Dig-up test results in the U.S. and around the world indicate that PVC pipe can be expected to provide reliable service in excess of 100 years. PVC pipes offer a high degree of resilience in freezing conditions and after 25 years meet virtually all new pipe requirements.

Is PVC or corrugated pipe better for drainage?

While landscapers use “non-rigid corrugated NDS pipes,” we use drainage grade PVC pipe because it is more durable and longer-lasting, especially when buried under heavy materials like soil. The corrugated pipe is cheaper but not nearly as strong.

How deep should I bury my sump pump line?

Dig a trench for the sump pump drain line that is at least 2 feet wide and the depth of the frost line in your area, plus an additional 2 feet. For example, if the frost line in your area is 12 inches, dig the trench 3 feet deep.

Should I bury my sump pump line?

It is recommended to bury the pipe at least 5 inches below the frost line––and if you opt for an above grade solution, extend the discharge line at least 10 feet away from the foundation wall. The sump pit has a line that goes from the pump up and out of the basement.

Should I unplug my sump pump in the winter?

Never unplug your sump pump.

While you might think you don’t need your sump pump over the winter months, you shouldn’t unplug it entirely. If a warm front comes through, snow melts and a rainstorm hits, you might end up with a wet basement all because you forgot to plug your sump pump back in.

Where should a sump pump drain to?

Your sump pump system should discharge any ejected water far away from your home, sending it downhill away from the foundation. Otherwise, the water pumped out by your sump pump will collect in the earth around your foundation, which is the cause of the problem you’re trying to address in the first place!

Can you drain your sump pump into sewer line?

Answer: Although it may be legal in your region to connect your sump pump to the sewer line, in most of the United States it is illegal to connect your sump pump to your sewer line. When there is heavy rainfall, the sewage treatment plants can become overloaded.

Can sump pump drain into street?

The biggest problem for your sump pump discharging to the street is safety hazards. If your sump pump is discharging to the street, water on the curb is expected. The water may freeze and be a safety hazard for kids and elders. Also, the water may cause problems for the adjacent property.