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Longevity The average above ground pool will last 7-15 years before the structure gives out, although their liners will last 5-9 years before they have to be replaced. For an inground structure, the longevity really is contingent on the type of pool. For example, fiberglass should last well over 20 years. Vinyl pools should have a structure that lasts, but their liner needs to be replaced on average every 6-11 years. As for concrete, their structure should also last a long time, but keep in mind they need to be resurfaced every 9-13 years, which can get very, very expensive.
1 Blue World Pools began installing above ground pools in the fall of 2001 and has installed thousands of pools.  HOW MANY PEOPLE DOES IT TAKE TO INSTALL AN ABOVE GROUND POOL? Here at Blue World Pools Inc. we use only professional installers and most are 2 or 3 person crews.