Fascia repairs can range from being fairly straightforward to being downright tricky, depending on the severity of the damage. Generally speaking, fascia repair jobs involve the removal of part or all of the fascia board, which means basically removing both the gutters and all of the leaves on the fascia pole. It's important to set up an extension ladder properly for fascia repair, as its upper end cannot rest directly on the segment you're replacing, meaning that its top must be supported by various support timbers such as deck timbers or tree trunks. When doing this kind of fascia repair, it is also important not to nail or screw the boards together, as this can cause large amounts of damage.
Once the fascia has been removed, you can proceed to the next step in a fascia repair job: replacing all of the flashing around the area. For metal flashings, you can either purchase ready-made panels or cut them yourself. The ready-made panels are a great convenience, but if you want to save time, you might consider purchasing cut or made metal flashing materials instead. Metal flashing is very sturdy, and can usually withstand quite a bit before they wear out. Metal shingles, however, are not as resilient and are more prone to becoming loose or even broken during heavy storms or other types of weather.
Before cutting anything into the boards, make sure that they're all level. Cut away any pieces that are too irregular to be straight, and double-check to ensure that all of the boards are straight - using a screwdriver between each board to ensure they are straight. When installing gutters or installing any hardware, you'll need to have a circular saw or power drill on hand. This is because fascia repair requires you to cut through the boards in "running bond". This is a slight difference from traditional roofing construction, which involves "running bond", and involves the boards being placed on top of one another "running" down the roof until they meet at the bottom, creating an impression of the ridge and ridges of the roof deck.