The answer to 'how to repair gutter guards' is to first inspect the gutter guards for any damage or debris buildup. If the guards are damaged, you'll need to replace them. If they're just dirty, you can clean them with a soft-bristle brush and mild detergent solution. Be sure to work safely by using a sturdy ladder and wearing gloves to protect your hands.
Gutter guards should be checked and cleaned at least once a year, typically in the spring or fall when trees are shedding leaves and debris. If you notice frequent clogging or water overflow, you may need to consider upgrading to a more effective gutter guard system. For complex repairs or installations, it's best to hire a professional roofing contractor who can ensure the job is done properly and safely.