5 Signs Your Roof Needs Replacement (Before It's Too Late)

Roofing sheets are built to last, but no roof lasts forever. Here are five signs it may be time to start planning a replacement.

1. Visible Rust or Corrosion

Small rust spots can usually be treated, but widespread corrosion — especially around fasteners — signals the protective coating has failed.

2. Sagging Between Purlins

This often indicates the gauge was too thin for the span, or purlins have weakened over time.

3. Faded or Chalky Colour

UV exposure breaks down paint coatings over years. Chalking (a powdery residue when you touch the surface) means the coating is at end-of-life.

4. Leaks at Overlaps

Persistent leaks at sheet joins, even after resealing, suggest the sheets have shifted or corroded at the overlap points.

5. Age Beyond Warranty

If your roof is approaching or has passed its warranty period (commonly 10–15 years for standard coatings), proactive replacement is more cost-effective than emergency repairs.

Egesa Mabati offers free on-site assessments at all our branches — get in touch before small issues become expensive ones.