The boards behind the gutter and under the eaves. Usually what a gutter that has been overflowing for a year has been quietly doing.
The board the gutter hangs off. Once it is soft the gutter has nothing to hold it, and the brackets pull straight out.
The underside of the overhang. Sagging, stained or holed linings, and the vermin gaps that open up once they go.
The gutter has to come off to do the fascia. Doing both at once is one visit and one scaffold, not two.
Replaced in what is already there, or in something that will not rot the next time the gutter blocks.
Michael comes out, gets up there and tells you what it actually needs, in writing, for free. Usually within a day of you asking.