Roof Water Redirection
Keeping Rain Water Away From Your Home’s Foundation
Why Redirect Roof Water Runoff?
Every time it rains, a large amount of that rain water flows off roof tops and into gutters. When a downspout ends at a splash block near the house, this water soaks through the ground and into the foundation drain. In homes built before the 1960s, the foundation drain connects directly to the sanitary sewer. As part of Blueprint Columbus, the City’s plan to keep rain water out of the sanitary sewers, rain water from downspouts will be directed away from your home’s foundation and into a pipe that leads to the street where it can easily flow into the storm sewer system, which was built to manage rain water.
How the process works
Investigating the roof
A survey team looks at each home to count downspouts and see where they drain, noting features such as patios or driveways around the home that could make redirection difficult. The investigation may include simulating a rain fall to determine drainage paths.
Designing the redirection
City teams will look at the findings for each home to determine which downspouts to redirect and where the rain water needs to go. Most of the time, the roof runoff will be redirected to a street or alley where it can easily flow into a storm sewer. In most cases, redirection will not disrupt any permanent structures like patios and driveways.
Completing the redirection
A work crew will dig a shallow trench from the downspout to the street, or other discharge location, and install a new pipe. If the existing downspout is directly connected to the City sewer, it will be disconnected. In every case, the water will drain at least seven feet from your home.
Restoring the yard
Once the crew has finished, they will restore your yard, using the original turf when possible, or plant grass seed.