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 environmental factors. Gutter guards made of plastic or vinyl may last 5-7 years, while metal or mesh guards can last up to 10 years with proper maintenance. Over time, the guards can become clogged, damaged, or dislodged, reducing their effectiveness and requiring replacement.
It's important to regularly inspect your gutter guards and clear any debris or build-up to extend their lifespan. If you notice significant wear, sagging, or gaps in the guards, it's a good time to consider replacing them to ensure your gutters continue functioning properly and diverting water away from your home's foundation.