Repairs are becoming frequent
If you're calling out a roofer for the same roof several times a year, the cost of ongoing repairs is likely approaching what a full re-roof would cost, without ever actually solving the underlying problem.
The roof covering is past its expected lifespan
Different materials have different realistic lifespans — natural slate can last a century, while some felt and lower-grade materials are designed for a couple of decades. Knowing where your roof sits matters.
Widespread, not isolated, damage
A handful of loose tiles is a repair. Damage spread across multiple sections of the roof usually indicates the whole covering is failing, not just a few unlucky spots.
Visible sagging or structural movement
This points to problems in the roof structure itself, not just the covering, and is a stronger signal that patching won't be a lasting fix.
A proper structural survey from our installation team will give you a clear, honest answer either way.