1. Regular Cleaning: Clear leaves, twigs, and debris from downpipes and their outlets to prevent clogs. Use a plumber’s snake or a high-pressure water nozzle to remove blockages. Clean downpipes at least twice a year, or more frequently if surrounded by trees.
2. Check for Damage: Inspect downpipes for cracks, rust, or dents. Repair minor damage with a sealant or patch kit, but replace severely damaged sections to ensure proper water flow.
3. Ensure Proper Flow: Verify that water flows freely through the downpipes. If you notice slow drainage, it could indicate a blockage or improper installation.
4. Inspect Connections: Ensure that downpipes are securely connected to gutters and the drainage system. Loose or disconnected sections can lead to leaks and overflow.
5. Consider Downpipe Guards: Install downpipe guards to prevent large debris from causing blockages.

Routine maintenance of downpipes helps avoid water damage and extends the lifespan of your gutter system. If issues persist, consult a professional for a thorough inspection and repair.