Curtain Drain Installation on the Connecticut Shoreline
If water flows downhill from a neighboring property, a wooded area, or a higher section of your own lot into the area you want to protect, a curtain drain is likely the right solution. Unlike a French drain that collects water already in a problem area, a curtain drain intercepts water while it’s still moving — stopping it before it arrives. Drainage Pro of CT installs curtain drains across the CT shoreline, typically for $2,500 to $5,000.
How a Curtain Drain Works
A curtain drain is a shallow trench drain installed across the path of water flow, uphill from the area you’re protecting. It’s constructed similarly to a French drain — a trench with filter fabric, drainage stone, and perforated pipe — but its placement and purpose are different. Where a French drain sits in the wet zone collecting accumulated water, a curtain drain sits above the wet zone catching water on its way down.
Think of it as a defensive line. Water flowing across or through the upper soil layer hits the curtain drain, drops into the stone and pipe, and is routed to a discharge point before it ever reaches your yard, your foundation, or your garden.
When You Need a Curtain Drain
Some properties benefit from a combination of curtain drain installation and
regrading to redirect both surface and subsurface water away from problem areas.
Your neighbor’s property is higher than yours and their water drains onto your land. This is one of the most common curtain drain scenarios in shoreline towns where lot sizes vary and terrain changes between properties.
A wooded hillside above your yard sends surface and subsurface water downhill after rain. The tree canopy absorbs some water, but during heavy rain the soil saturates and water flows.
Your property is at the bottom of a slope and the lowest part of your lot is consistently wet from runoff above.
A seasonal water flow path crosses your property — dry in summer, flowing in spring and fall.
Curtain Drain vs. French Drain
The simplest way to understand the difference: a curtain drain intercepts water flowing toward something. A French drain collects water that’s already around something. If the problem is that water arrives from uphill, you need a curtain drain uphill to intercept it. If the problem is that water accumulates in a low area or against your foundation, you need a French drain in or around that area. Many properties need both — a curtain drain to reduce the volume of incoming water, and a French drain to manage what remains.
During our free site assessment, we determine which approach your property needs, or whether a combination is the right answer.
Cost and Installation
Curtain drain installation on the CT shoreline typically costs between $2,500 and $5,000. The primary cost factors are length (curtain drains can run 30 to 100 feet or more), depth, soil conditions, and the discharge solution. Because curtain drains are typically shallower than French drains, they’re often less expensive per linear foot. We provide free on-site estimates with exact pricing. Every installation includes our 5-year workmanship warranty.
Frequently Asked Questions About Curtain Drains
What is the difference between a curtain drain and a French drain?
A curtain drain intercepts water flowing toward a problem area from uphill, like a dam across the water path. A French drain collects water already around a problem area, like your foundation or a soggy lawn section. They are similar in construction but solve different problems. Sometimes both are needed.
Where should a curtain drain be installed?
A curtain drain is installed uphill of the area you want to protect, perpendicular to the water flow direction. It intercepts the subsurface water before it reaches your yard or foundation and redirects it to a safe discharge point. Proper placement is critical --- too close to the problem area and it misses the water. Too far uphill and it intercepts water that was not heading toward you.
How deep does a curtain drain need to be?
Curtain drains are typically installed 18 to 36 inches deep, depending on how deep the subsurface water is flowing. Shallower water from recent rain requires a shallower drain. Deeper water from a high water table or hillside seepage requires a deeper trench. Our site assessment determines the appropriate depth for your specific conditions.
