01
A local failure can stay local
One damaged joint or accessible section may support a focused repair when the surrounding system is in reasonable condition and the failure has not repeated.
The repair should still account for compatibility with adjacent material and the condition revealed during access.
02
A pattern can make repeated repairs expensive
Multiple failures, widespread corrosion, recurring finish openings, inaccessible runs, or a planned renovation can shift the comparison toward broader replacement.
Age or material name alone is not enough. Document actual failures, connections, pressure conditions, and accessible samples.
03
Compare scopes on the same assumptions
A fair comparison identifies which piping is included, how finishes are accessed, what remains, how service interruptions are handled, and which restoration work is excluded.