Concrete Trench Drains & Drainage Channels in Gaithersburg, MD

A trench drain — also called a channel drain — is a linear drainage structure set into a paved surface to intercept sheet flow across the concrete and carry it to an outlet. Installed across a driveway, along a patio edge, or through a commercial apron, a trench drain catches water before it pools, runs toward a garage, or crosses a walkway it should not.

In Gaithersburg, where sloped driveways, flat patios, and tight lot grading all create drainage challenges, a trench drain integrated into the concrete is often the cleanest way to move surface water off a paved area. The drain sits flush with the concrete, the grate catches the water, and the channel carries it to a discharge point — keeping the surface above it dry and usable.

This page focuses on concrete-integrated surface drainage: the drains set into driveways, patios, garage entrances, commercial flatwork, loading areas, walkways, and sloped hardscape. We do not claim to provide comprehensive civil engineering or municipal stormwater design. Where a drainage problem is part of a larger site or stormwater system, we coordinate around those requirements rather than assuming one drain solves every problem.

Drainage problems on concrete surfaces show up as water behavior — where it pools, where it runs, and where it sits after rain. Recognizing the pattern helps determine whether a trench drain is the right fix.

Common Drainage Signs

• Water pooling on a driveway, patio, or walkway after rain
• Runoff flowing toward a garage or building entrance
• Water crossing a walkway or path where it should not
• Puddling on a patio that does not shed water
• Erosion of soil or mulch beside the concrete edge
• Repeated icing across a surface in winter
• Water collecting at low points where the grade traps it
• Runoff from a sloped driveway sheeting across the pavement

We do not claim a trench drain is always the correct solution. Some drainage problems are better addressed by regrading the surface, adjusting the slope, or correcting a downspout discharge. A trench drain is the right fix when the goal is to intercept sheet flow across a paved area at a low point or a transition — and we assess whether that is the case before recommending one.

Installing a trench drain in existing or new concrete follows a sequence built around the low point, the outlet, and the integration with the surrounding surface.

1. 1Drainage assessment — evaluate where water collects and where it should go.
2. 2Determining the low point — locate where the drain will intercept flow.
3. 3Planning drain alignment — lay out the channel across the surface.
4. 4Cutting and removing existing concrete where applicable — saw-cut and remove the slab section for the drain.
5. 5Excavation — dig the trench for the drain body and outlet.
6. 6Base preparation — add and compact base material under the drain.
7. 7Drain body and channel placement — set the channel to the correct elevation and slope.
8. 8Outlet coordination — connect the channel to the discharge point.
9. 9Concrete placement around the channel — pour and finish the concrete flush with the grate.
10. 10Grading — set the surrounding slope so water reaches the drain.
11. 11Curing — allow the concrete to gain strength before the area returns to use.

We do not claim plumbing or underground drainage work beyond the actual scope. Where a drain ties into a storm system, a dry well, or an underground pipe, that connection is coordinated with the project requirements — we focus on the concrete-integrated drain and the surface around it.