If you have damage to a gutter of more than 30 cm, you should not suffer with the fraud of the gap, and you will have to replace the worthless piece of iron whole. In order to start the replacement of the gutter, it is necessary to remove the spectrum of size, and the damaged area directly. Then you need to purchase an identical product. If you have an installed old model, and it is not possible to find it in specialized stores, you can contact the merchants of the old things that mainly trade in spontaneous markets. There is also an option to make a part to order. These options will come out really cheaper than replacing the entire drain in general. Now it is necessary to remove all fasteners so as not to damage the groove in its entirety. According to experts, they sometimes put wooden wedges in the gutter, which really simplifies the work with a crowbar.
Now it is necessary to insert the wedges between the gutter and the edge of the roof and sawn off the damaged area with a hacksaw. Then we directly cut out the new section of the gutter, which should be approximately 10 cm longer than the previous.
We clean the edges of the slices on the old groove and the help of silicone mastic, lubricate the edges of the joints. Now you can set a patch that was previously adjusted for the desired size. We fix the connection with rivets or screws.