InstaBidsFor homeowners
Types of French drain: which one fits your yard or basement?
Choose Yard French drain (gravel trench with perforated pipe) for low points in the yard where drainage is needed to reduce surface ponding (the pipe may go under pavers, stone, turf or mulch); Curtain drain (interceptor or cutoff drain) for hillside sites, where a cutoff drain may be needed on the high side of the house to divert water away from the foundation (ISU Extension, 2010); Exterior footing drain (perimeter drain tile) for keeping water moving away from the foundation to help maintain a dry basement or crawlspace; Interior perimeter drain (drain tile inside the wall) for existing houses, by breaking out a strip of the basement floor next to the inside foundation wall (ISU Extension, 2010).
The right choice depends on the drainage characteristics of the soil, the slope of the lot, the amount of surface water flowing across the lot, the seasonal high water table, and the outlets available for the water.
| Type | Best for | Main advantages | Main drawbacks |
|---|---|---|---|
| Yard French drain (gravel trench with perforated pipe) | low points in the yard where drainage is needed to reduce surface ponding (the pipe may go under pavers, stone, turf or mulch) | Building America Solution Center (PNNL): where large water volumes are expected, a French drain can be installed at the base of a swale for faster drainage | Moore County, NC handout (undated): it won’t have the capacity of a dry well, so it "will need to be graded toward a lower area"; Moore County, NC handout (undated): not recommended alongside a home’s foundation, where it would only retain water and moisture around the foundation |
| Curtain drain (interceptor or cutoff drain) | hillside sites, where a cutoff drain may be needed on the high side of the house to divert water away from the foundation (ISU Extension, 2010) | Missouri DHSS septic owner’s manual: curtain drains require little maintenance; Missouri DHSS septic owner’s manual: curtain drains are "most effective when used to intercept groundwater moving through saturated soil above a restrictive layer" | Missouri DHSS septic owner’s manual: where there is no restrictive layer, a curtain drain may still help remove water, but it is less effective; Missouri DHSS septic owner’s manual: the drain and any surface water diversion should be checked at least annually and after heavy rains |
| Exterior footing drain (perimeter drain tile) | keeping water moving away from the foundation to help maintain a dry basement or crawlspace | ISU Extension (2010): around existing houses, seasonal high water tables "can be lowered by installing drainage around the outside wall" | Building America Solution Center (PNNL), existing homes: a labor-intensive fix that involves excavating around the home’s perimeter, ideally to the footing; ISU Extension (2010): the bottom of the drain tile must be below the basement floor, and the tile must slope to an outlet; ISU Extension (2010): draining around the outside wall of an existing house is expensive and disruptive |
| Interior perimeter drain (drain tile inside the wall) | existing houses, by breaking out a strip of the basement floor next to the inside foundation wall (ISU Extension, 2010) | ISU Extension (2010): usually the drain tile will drain the saturated soil | ISU Extension (2010): a sump probably will be needed to collect water from the drain tile; ISU Extension (2010): under some extremely wet conditions, you may need added tile lines under the center of the basement floor, exterior perimeter drain tiles, or other measures; ISU Extension (2010): draining under the basement floor of an existing house is expensive and disruptive |
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MCP connector · REST API · plain HTMLHand any of these to your assistant and it can help you write this job's request; you send the request yourself. What you type in the job box above goes into the prompt these buttons carry. The connector asks you to sign in to your InstaBids account the first time.
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https://instabids.ai/intake?from=options-french-drain&utm_source=us&utm_medium=page&utm_campaign=options&page_type=options#job=french%20drain%20or%20yard%20drainage%20installation - Prompt for any AI, with your job
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Sources for the facts on this page
- Building America Solution Center (PNNL for the U.S. Department of Energy), Swales, Drains, and Site Grading for Stormwater Control, national laboratory, read 22 October 2026.
- Moore County, North Carolina, Water Drainage Solutions handout (undated), government, read 22 October 2026.
- Iowa State University Extension, PM 1561 Building Basements in Wet Locations (revised January 2010), university extension, read 22 October 2026.
- Missouri Department of Health and Senior Services, Onsite Wastewater Treatment System Owner's Manual, Chapter 11: Curtain Drains, government, read 22 October 2026.
- Building America Solution Center (PNNL for the U.S. Department of Energy), Footing Drain Pipe, national laboratory, read 22 October 2026.
- Iowa State University Extension, PM 1560 Proper Drainage Around Your Home (reviewed January 2010), university extension, read 22 October 2026.