Gutter cleaning becomes necessary anytime debris starts piling up faster than rainwater can move through the system, which in San Antonio often happens after heavy spring storms, in late fall when oak and pecan leaves drop, or after a stretch of high wind. Signs it is time for seasonal gutter cleaning include water spilling over the sides during rain, sagging gutter sections, plants sprouting from the trough, or staining on your siding and fascia. Waiting too long between cleanings raises the risk of pest nests, wood rot and foundation issues, which is why most San Antonio gutter maintenance plans call for cleaning at least twice a year.