Gutters only collect water. Where that water ends up is decided by the downspouts and what happens at the bottom of them. A downspout that empties right next to the foundation can undo most of the benefit of having gutters at all, so drainage is worth as much attention as the gutters themselves.
Why downspout placement matters
Every downspout carries the runoff from a section of roof. In a heavy storm that can be a lot of water arriving in one spot. If it pools against the house, it can soak the soil around the foundation, wash out flower beds, undermine walkways and patios, and find its way into crawl spaces and garages. Spreading the roof's water across enough downspouts, and sending each one away from the house, keeps that water where it belongs.
Common drainage fixes
- Larger downspouts: oversized downspouts move more water and clog less often, which helps on big roofs and in heavy rain.
- More downspouts: long gutter runs often need an extra outlet so water does not back up and overflow.
- Extensions and splash blocks: simple pieces that carry water a few feet away from the foundation before it soaks in.
- Underground drain lines: buried pipe that carries water from the downspout to a spot farther from the house, often ending at a pop-up emitter in the yard.
- Rain barrels: collect water from a downspout for garden use, with an overflow that still needs to drain away safely.
When yard grading is part of the problem
If the ground slopes toward the house, even well-placed downspouts can send water back to the foundation. A provider may suggest regrading a small area, adding a swale or extending drain lines farther out. Larger grading jobs may be outside a gutter company's work, and they will usually tell you if a landscaper or drainage contractor is a better fit.
Questions worth asking
- Where does each downspout drain now, and where should it drain?
- Are my downspouts large enough for the roof area they serve?
- Would underground drain lines help, and where would they end?
- How do underground lines get cleaned if they clog?
Signs of a drainage problem
Watch for soil washing out below downspouts, standing water near the foundation after rain, damp crawl spaces or garage floors, and stains or erosion along walkways. These are often fixed with modest changes once someone traces where the water is going.
How long it takes
Adding extensions or replacing downspouts is usually a short visit. Underground drain lines take longer because of digging, often a day depending on length and soil.
