This fiberglass myth is a favorite of inground pool builders who have never installed a fiberglass swimming pool. Concrete and fiberglass pool pop ups are possible if the pool is installed incorrectly.
Getting pool contractors that know what they are doing and understand hydrostatic pressure is key when installing an inground fiberglass swimming pool. 99% of all fiberglass pool don’t pop up out of the ground.
Fiberglass pools don’t pop out of the ground unless there is more water, or hydrostatic pressure, under the pool making it want to act like a boat. Lets get a little technical
Principle of Displacement
Any watertight vessel, in this case your pool, will float, regardless of what it is made of, provided the vessel is empty and there is water under it. This same “principle of displacement” is what allows heavy concrete barges to float as easily as lightweight fiberglass boats. What overcomes displacement? The weight of the water! This is why boats that have sunk do not “pop up” out of the water!
Fiberglass inground specialists don’t install boats, they install pools so “Do Fiberglass Pools Pop Out of the Ground” is never an issue.
The process to prevent fiberglass pool pop ups is rather simple:
W226 N781 Eastmound Drive
Waukesha, WI 53186
3300 County Road 10
Minneapolis, MN 55429