Fiberglass Stringer Repair
How to Repair Fiberglass Stringers
Several ways to do this, Are you replacing everything? Just cutting out a rotten section? Keeping the fiberglass skin that is over the rotten section? Each of these will have diferent steps to take. they are all very similar and I will get to each one acordingly.
Removing 1 side (skin) from the core of the stringer: