Underground downspout lines, pop-up emitters, and gutter-to-drain tie-ins — routing roof water away from your foundation for good.
A 2,000-square-foot roof dumps over 1,200 gallons of water during just one inch of rain. When that water hits the ground right next to your foundation through short downspout extensions or splash blocks, it saturates the soil around the footing and creates the exact conditions that lead to wet basements, settling, and erosion.
We bury downspout lines underground and route them to pop-up emitters, dry wells, or daylight outlets well away from the house. The system is permanent, low-maintenance, and invisible once the lawn grows back. For properties with multiple downspouts, we design a unified underground network that handles the full roof load without overwhelming any single discharge point.
Roof water management is straightforward when done right. Here's the scope of work we handle.
Solid pipe buried underground from each downspout to a discharge point far from the foundation. Properly sloped, connected, and backfilled for permanent performance.
Spring-loaded discharge valves installed at the end of buried lines. They open under water pressure to release flow, then close flush with the ground — clean, discreet, and maintenance-free.
Connecting gutter downspouts to underground drainage systems with proper adapters, cleanouts, and transitions. Designed for easy access if the system ever needs flushing.
Simple concept, careful execution. Every line needs to slope correctly, connect securely, and discharge where it won't cause new problems.
We locate every downspout, measure the roof area each one handles, and identify the best discharge location for each line based on the property's grade and layout.
Trenches are dug at the proper depth and slope. Solid pipe is laid from each downspout to its discharge point, with cleanout access points where needed.
Downspout adapters are fitted, pipe joints are secured, and pop-up emitters or other discharge outlets are installed and tested for proper flow.
Trenches are backfilled and compacted. Lawn areas are regraded and prepped for seed or sod. The finished system is invisible from the surface.
Downspout & Roof Water Management is one part of what we do. These related services often go hand-in-hand.
French drains, swales, catch basins, yard inlets, and regrading for surface runoff.
Footing drains, drain tile, sump pump discharge routing, and wet basement exterior solutions.
Riprap, rock armoring, silt fencing, slope stabilization, and erosion-control planting prep.
Surface extensions work, but they get kicked out of place, damaged by mowers, and create tripping hazards. Buried downspout lines are permanently installed underground, route water farther from the foundation, and eliminate the maintenance and mess of above-ground extensions. They also look much cleaner.
A pop-up emitter is a small valve installed at the end of a buried downspout line. When water flows through the pipe, the lid pops open and discharges the water at the surface. When flow stops, the lid closes flush with the ground. It keeps the discharge point clean, prevents debris from entering the pipe, and sits nearly invisible in the lawn.
At minimum, downspout water should discharge 6 to 10 feet from the foundation. We typically route buried lines 10 to 20 feet out, depending on the lot layout and grade. The goal is to get the water far enough away that it can't migrate back toward the foundation through the soil.
It depends on the system. French drains are designed to collect groundwater, not roof runoff. Tying gutters directly into a French drain can overwhelm it during heavy rain. In most cases, we run a separate solid pipe for the downspout discharge and keep the two systems independent. If they need to share an outlet, we'll size and configure it properly.
A typical residential downspout burial with a pop-up emitter costs between $300 and $800 per downspout, depending on the length of the run, depth of burial, and site conditions. Most homeowners have 4 to 8 downspouts, so a full-house system usually falls between $1,500 and $5,000. We quote after walking the property.
Tell us about your property and we'll design a downspout system that keeps water far from your foundation — permanently.
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