What is a downspout diverter and how does it work?
A downspout diverter is a device installed into your home’s downspout that allows you to temporarily redirect rainwater from your gutters. Instead of the water flowing directly to the ground or into a drainage system, a diverter sends it to a specific collection point, most commonly a rain barrel or cistern. When the collection container is full, or when you close the diverter, rainwater resumes its normal flow down the downspout. It works by creating a bypass in the downspout, directing water through an opening when activated.
Benefits: water harvesting, foundation protection, overflow prevention
- Water Harvesting: The primary benefit is the ability to collect rainwater. This harvested water can be used for irrigation, gardening, washing cars, or other non-potable uses, saving on your water bill and conserving municipal water resources.
- Foundation Protection: By directing water away from your foundation into a controlled collection system, downspout diverters help prevent soil erosion around your home and reduce the risk of basement flooding and foundation damage.
- Overflow Prevention: Many diverters are designed to automatically revert to normal downspout flow once your rain barrel or cistern is full, preventing unsightly and potentially damaging overflows of your collection system.
Types & best brands reviewed
Downspout diverters come in various designs, often made from durable plastics or metals. Key types include:
- Flexible Hose Diverters: Simple attachments with a hose that directs water to a barrel.
- Leaf-Filtering Diverters: Include a screen to filter out debris before water enters your collection system.
- Automatic Shut-off Diverters: Designed to stop diverting water once the collection barrel is full.
Oatey
Oatey offers a range of durable diverters, often featuring robust plastic construction and easy installation. They are known for their reliability and effectiveness in basic rainwater collection setups.
EarthMinded
EarthMinded specializes in complete rain barrel connection kits that include high-quality diverters. Their systems often feature smart design elements for ease of use and efficient debris screening.
Clean Rain & others
Brands like Clean Rain (especially their “Rain Head” systems) provide advanced diverters that also act as first-flush devices, diverting the initial, dirtiest water before sending cleaner water to your barrel. Other reputable brands offer various designs tailored to specific downspout sizes and user needs.
How to install a downspout diverter?
Tools & materials
- Hacksaw or tin snips
- Measuring tape
- Marker
- Drill (optional, for pilot holes)
- Screwdriver
- Sealant (silicone caulk)
- Downspout diverter kit (includes diverter, hose, and connectors)
- Rain barrel or cistern
Step-by-step: cutting, fitting, sealing
- Determine Placement: Decide where you want your rain barrel to sit and mark the downspout section just above the barrel’s intake. The diverter should be positioned so the hose connects comfortably.
- Cut the Downspout: Carefully cut a section out of your downspout using a hacksaw or tin snips. The length of the section to remove will depend on your diverter model, so always follow the manufacturer’s instructions.
- Fit the Diverter: Insert the diverter into the cut section of the downspout. Most diverters are designed to fit snugly. Secure it with screws if your model requires them.
- Connect the Hose: Attach the diverter’s hose to the inlet port of your rain barrel. Ensure a tight, leak-proof connection.
- Seal (if necessary): Apply silicone sealant around the seams where the diverter meets the downspout to prevent any leaks.
Maintenance: cleaning and winter prep
- Regular Cleaning: Periodically check the diverter for debris accumulation, especially if it has a screening mechanism. Clear any leaves or twigs that might impede water flow.
- Winter Preparation: In colder climates, it’s crucial to disconnect and drain your rain barrel and diverter before the first freeze. Water freezing in the diverter can cause it to crack or burst. Store the barrel and diverter (if removable) in a sheltered location during winter, or ensure the diverter is set to bypass the barrel and direct water normally down the downspout.
Troubleshooting: overflow, leaks
- Overflow: If your rain barrel overflows even when the diverter is set to bypass, check if the diverter’s bypass mechanism is clogged or if the barrel’s overflow port is blocked.
- Leaks: Leaks at the diverter connections are usually due to improper fitting or insufficient sealant. Re-seal as needed. Ensure the downspout itself is not damaged above or below the diverter.
DIY vs professional installation: cost comparison
- DIY Cost: The cost of the diverter kit itself, ranging from $20 to $100, depending on features and brand. This is a relatively simple DIY project.
- Professional Installation Cost: Includes the diverter kit plus labor. A professional might charge $100 to $300 to install a diverter, especially if it’s part of a larger gutter or rainwater harvesting system installation.