If it is large use a piece of galvanized metal flashing.
Gutter patch material.
Get free shipping on qualified repair fabric or buy online pick up in store today in the building materials department.
If the hole is small you can use plastic roofing cement.
If you have a large area to patch that s damaged or rusted your best solution may be to cut that section of guttering away with a hacksaw.
If the metal gutter parts have rusted through you can quickly and easily patch it.
Step 5 copper gutter.
This guide explains how to fix gutter leaks specifically when repairing a small or large hole in metal gutters.