Gutters should be cleaned at least twice a year, in the spring and in the fall, to remove the debris from trees that can clog the eavestroughs and downspouts. Debris like leaves, twigs, and seed pods can build up and cause your gutters to overflow, potentially causing damage to your roof and foundation. Water backing up under the shingles can rot the edge of your roofline. Overflow water falling next to your foundation can end up leaking into your basement or crawl space.

Whether or not you can use a pressure washer to clean your gutter guards depends on the type of gutter guard you have and the strength of the pressure washer. Most gutter guards can handle a low-pressure setting but check first. If you’re unsure if your gutter guard is designed for pressure washing, check your manufacturer’s instructions, ask a pro, or use a garden hose to clean the gutter guard instead. As gutter guards age, they become less resistant to the strong forces of a power washer, so treat older gutter guards with more care.

Installing a leaf protection system that keeps leaves and pine needles out of your gutter downspout is the best way to prevent clogs. Additionally, you may want to remove any trees or branches that are hanging over your downspouts to prevent leaves and branches from making their way into your gutter system. Of course, routine downspout cleaning and inspection can also help you stay ahead of clogs that create water damage at your home.

Yes, gutters can still get clogged even with gutter guards installed. While guards significantly reduce the amount of debris that enters your gutters, they are not 100% effective.

Small debris such as pine needles, seedlings, algae, small leaves, and pebbles can pass through the guard's screen or mesh and accumulate over time. Clogs can also form if the guards themselves are not cleaned and become overwhelmed with debris on top, preventing water from entering the gutter.

If this buildup is neglected, it can lead to clogs, water leaks, mold growth, and even plants sprouting from the gutters. The primary benefit of gutter guards is not the complete elimination of maintenance, but a dramatic reduction in how often you need to perform it, often from several times a year to just once a year or less.