There are two main ways to install metal gutters - either by screwing them directly into the fascia board of the house, or by using special hangers that clip onto the gutter and then screw into the fascia board. Whichever method you choose, make sure you have a level surface to work on, and that you use enough screws or hangers to firmly secure the gutter in place.

Well, that all depends on the style and type of gutter you are using. There are a variety of ways to attach metal gutters, including screws, nails, or brackets. You'll want to consult your gutter's installation instructions to be sure you're using the right method for your particular gutter system. Good luck!