Three checks, not the age of the system
Whether a gutter is worth repairing comes down to three things. Age is not one of them: a properly hung system can be sound after decades, while a poorly hung one can fail in a fraction of that time.
- Does it hold its fall, so water reaches the outlet and the run empties after rain
- Are the hangers sound along the whole length, not just at the ends you can see from the ground
- Are the seams and corners dry
When replacement is the right call
Replacement earns its cost once the failures stop being isolated: hangers gone at several points, or fall lost in more than one place. Those point to a system that has reached the end of what it can do, not a system with one fault.
- A run that was undersized for the roof from the start
Repair or replace questions
We have had the same corner resealed twice. Is that a problem?
Yes, it is a sign. A joint that keeps failing means the section has moved or the run has lost its fall, so the sealant is being asked to hold something it cannot. Resealing it again buys only a little more time.
Can part of a gutter run be replaced instead of the whole thing?
Sometimes. Seamless gutters are formed as one continuous length, so a partial replacement is less straightforward than on a jointed system. It is worth asking rather than assuming either way.