The lifespan of the majority of asphalt shingle roofings standards around two decades depending on climate problems & maintenance

https://www.scribd.com/document/881702677/The-Science-of-Roof-Leak-Detection-How-Professionals-Find-Issues-215656

The lifespan of most asphalt roof shingles roof coverings averages around 20 years relying on climate problems & maintenance methods significantly affecting their sturdiness gradually!