What Is A French Drain?

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French Drain

The history of modern waterproofing can be traced back to the first weeping tile—the French drain. It’s named after Henry Flagg French, a lawyer from Concord, Massachusetts, who sought a way to keep his farmhouse dry and popularized his technique in his book Farm Drainage (1859). French was an unlikely inventor because he was not only a lawyer but also a one-time Assistant U.S. Treasury Secretary.

French received an Ivy League education at Dartmouth and Harvard but was an avid agriculture enthusiast who often experimented with applying science to farming, especially in the study of soil quality. Despite his most fruitful experiment—the French drain—having been conceived over 160 years ago, its use today has not changed much and is used in the waterproofing of homes across the Western world.

“We install weeping tiles in all our exterior basement waterproofing projects, and the technology really hasn’t changed all that much [since 1859],” says Chris Cavan, Vice President of City Wide Group, a Toronto-based basement waterproofing company.

The first French drain was a ditch dug out on a higher elevation near the house, with a slope along it. It was then filled in with gravel, which rested on perforated roofing tiles to filter debris.

How Does It Work?

A French drain involves a sloped trench lined with a perforated pipe running under gravel, fabric, and soil. Its purpose is to direct water away from the home and off the property towards lower land.

This means that during a heavy rainstorm, water that would otherwise pool around the exterior of the home can safely seep into the pipe, avoiding a flood through any cracks in the home’s foundation. It was extremely important to keep the cellars of farmhouses dry because that’s where food was stored, and being so far from town made it crucial to be innovative. A flooded cellar was especially a nightmare in the wintertime because it would spoil what the family subsisted on for months after the harvest.

DIY French Drain

French Drain Ideas

To make your own French drain, you will need a few materials: permeable landscape fabric, a perforated plastic drain, gravel or rock, and a spade.

  1. Locate underground cables and pipes on your property.
  2. Plan the drain’s route using landscape paint.
  3. Position it one meter away from walls, fences, posts, and plants, including trees.
  4. Depending on where you live, you may need municipal approval first.
  5. Begin work on a downhill slope so the trench can effortlessly direct water away from the property.
  6. The standard drain size is 6 inches (15 cm) wide and 18 to 24 inches (46 to 61 cm) deep.
  7. Ensure the trench is on a decline.
  8. Line trench with landscape fabric.
  9. Perforate the pipe with three holes for every foot of the pipe.
  10. Add gravel on top and along the whole trench.
  11. Backfill with soil.
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Jinally
Jinally is a co-editor at MyDecorative.Com. She is a role model, especially in Social media Optimization in business and primary tasks, with an understanding of communicating and executing all activities related to referral searches. She works closely with the team and looks after the quality and growth of off-site factors like Social Media Marketing that drive referral growth. In addition, she analyses and creates strategic recommendations for social media promotions.

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