The answer to 'how often to replace downspouts' is that most experts recommend replacing downspouts every 20-30 years, depending on the material and local climate conditions. Downspouts are an important part of your home's drainage system, directing water away from the foundation and preventing water damage. Over time, downspouts can become damaged, rusted, or clogged, reducing their effectiveness and potentially causing issues like basement flooding or soil erosion around the home.
The exact lifespan of your downspouts will depend on the material - metal downspouts tend to last longer than plastic, for example. Homes in areas with heavy rain, snow, or harsh winters may also need to replace downspouts more frequently. Regular inspection and maintenance can help extend the life of your downspouts, but eventually they will need to be replaced to ensure proper water drainage around your home.