How long does the ONDULINE guarantee last?

Guarantee depends on the product and is adapted to the climate where the product is intalled. 

(Worldwide) ONDULINE roofing sheets are guaranteed to remain weatherproof for 15 years under normal usage, when fixed and maintained according to fixing instructions 
(Europe) ONDULINE EASYFIX is guaranteed for 10 years.
ONDULINE EASYLINE are guaranteed 5 years.