Disconnecting your roof drains from municipal stormwater sewer systems, and redirecting the downspout to vegetated areas relieves pressure from your foundation and aging stormwater infrastructure.
- It is important to redirect water away from your home’s foundation – a distance of at least 2 metres is generally recommended.
- Water from the downspout should be released to vegetated areas of your property such as a rain garden, or to specifically designed collection areas (such as a rain barrel) that allow water to slowly infiltrate the ground, evaporate, or remain in storage for later use.
- Do not redirect the stormwater to an impermeable surface where it could freeze in the winter.
- If using a splash block at end of the downspout, be sure the splash block and ground upon which it rests slope away from the house.
It is recommended to refer to a professional for guidance; however, connections for downspouts may be found at your local hardware store.
- Carefully cut the existing downspout approximately 9 inches above the standpipe.
- Cap the standpipe with a plastic cap.
- Attach an elbow to the existing downspout.
- Attach the elbow into a downspout extension to carry water away from the foundation.
- To carry rainwater far from the house, dig a shallow trench from the downspout out to daylight. Then bury 4-inch-diameter PVC pipe in the trench and connect it to the downspout.
- When you can’t extend the downspout to daylight, dig trench extending 10 feet from house and line it with either perforated PVC pipe or flexible drainage pipe.
- In extreme situations, you may have to install a drywall at the end of the perforated pipe, which will disperse the rainwater into the ground.
Clean gutters regularly to keep rainwater flowing freely.