Dark vertical stripes on the gutter face — 'tiger striping' — or water pouring over the edge during storms. We separate the two problems and fix the one you actually have.
Dark vertical stripes ('tiger striping') on gutter faces, or water spilling over during Florida downpours.
Striping is electrostatic bonding of pollution and roof runoff to the gutter finish. Overflow is usually debris inside the gutter — a different problem entirely, and we quote them separately so you never pay for the wrong one.
Faces-only brightening typically runs $75–$200; interior clean-outs $100–$250 depending on linear footage and home height. Often bundled with a house wash.