EPDM rubber
A well-installed EPDM roof can reasonably be expected to last 25 years or more, with minimal maintenance beyond periodic inspection.
GRP fibreglass
GRP systems typically offer a similar or slightly longer lifespan than EPDM when properly installed and maintained.
Felt systems
Modern high-quality felt systems generally offer a shorter lifespan than EPDM or GRP, often in the region of 15-20 years, though this varies by product.
What actually shortens lifespan
Poor original installation — incorrect falls, inadequate detailing — is by far the most common reason a flat roof fails well before its expected lifespan.
If you're unsure how much life is left in your flat roof, our team can assess it.