Roof lifespan depends on the material, exposure, pitch, installation quality and maintenance. Here are realistic ranges rather than fixed numbers.
Typical Lifespans by Material
Indicative design life — actual lifespan varies with exposure and maintenance.
| Material | Typical design life |
|---|---|
| Concrete interlocking tiles | 40–60 years |
| Clay tiles | 60+ years |
| Natural slate | 80–100+ years |
| Felt flat roof | 10–20 years |
| EPDM rubber | 25–35 years |
| GRP fibreglass | 25–30 years |
Concrete interlocking tiles commonly have a design life of several decades, but their actual lifespan depends on exposure, pitch, installation quality and maintenance.
Frequently Asked Questions
Often, yes — steeper pitches shed water faster, reducing the time moisture sits on the covering, which can extend its life.