You can fix a leaking metal gutter by sealing the seams with a waterproof sealant, such as roofing tar or silicone caulk. You can also patch leaks with a piece of aluminum flashing or copper tubing. Simply cut a piece of flashing or tubing to fit the size and shape of the leak, then apply a thin coat of silicone caulk to the back of the patch before pressing it into place.

There are a few things you can do to fix a leaking metal gutter. One is to replace any missing or damaged screws or nails that hold the gutter in place. If the gutters are loose, they will leak. You can also seal any cracks or holes with silicone caulk. Finally, make sure the gutters are properly aligned and attached to the roof so that the water flows into the downspout and away from your house.