The answer to 'when to replace gutter guards' is that gutter guards typically need to be replaced every 5-10 years, depending on the material and quality of the guards. Cheaper plastic or metal gutter guards can degrade and become less effective over time, while higher-quality guards made of durable materials like stainless steel may last closer to 10 years. It's important to inspect your gutter guards regularly and replace them when they start to show signs of wear, such as cracks, holes, or a buildup of debris that prevents proper drainage.
Replacing gutter guards is a relatively straightforward task that many homeowners can handle themselves, but it's always a good idea to consult a professional roofing or gutter contractor if you're unsure about the condition of your system or need help with the installation.