Concrete Pools Vs Fiberglass Pools: A Sincere Comparison Moreover, metal framework of an above-ground swimming pool usually just lasts 7-12 years, indicating that it can be a more expensive alternative in the long-term. Finally, the combination of the appearance and the brief life-span can suggest an above-ground pool is a deterrent when attempting to on sell the home. For these reasons, fiberglass swimming pool owners usually invest 75% much less money and time maintaining their pools. This i...