Your swimming pool will probably need some repairs over the course of its lifetime, even though you can considerably limit the likelihood of needing major repairs with good installation and routine care. Even the more durable gunite surface of a public pool can occasionally need repairs, just like there are typical repairs needed for fiberglass pools or those with vinyl liners. A gunite pool is created by using a mixture of small particle cement and sand which is then typically being poured on site into a steel rod frame.
Gunite Pools: Cracks
The plaster layer, not the gunite itself, typically contains any visible fractures that are seen on the surface of a gunite swimming pool. If the break is only in the plaster coating, it can be fixed by draining the pool’s water and then resurfacing it. However, if the crack penetrates the plaster layer and reaches into the actual gunite, a repair will entail enlarging the crack and then filling it with caulk before resurfacing. A expert will normally charge about $90* per linear foot to fix a crack that is longer than a foot and which actually reaches into the gunite.
Gunite Pools: Pop Ups
If you live along the coast or someplace else with a high water table, your pool is at danger for accumulation of hydrostatic pressure. This increase in pressure has the potential to cause the top of your gunite pool to emerge from the earth. Your swimming pool will be irreparably destroyed if a pop up happens. Of course, that means that prevention is the best course of action, and installing a hydrostatic pressure release valve will help you do that. Hydrostatic pressure relief valves are well worth their modest cost, especially when contrasted to the tens of thousands of dollars that repairing your swimming pool might cost. How much are we talking? Typically not more than $30.
Gunite Pools: Hollow Spots
Over the course of its existence, your gunite swimming pool may require repair for hollow spots in addition to cracks and pop-ups. When the swimming pool separates from the substrate, the pool walls lose the necessary support, which might lead to these problems. You might notice bulges or divots when the backfill moves away from the pool, but more often than not, all you’ll notice are tiny cracks arranged in a pattern like a spider’s web or crow’s feet. The required repairs entail resurfacing the entire swimming pool as well as fixing any empty sections. This repair may cost around $1,500 for a 150 square foot pool.
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*With the rapid recent rate of inflation and increased difficulty sourcing materials, the actual costs will widely vary from location to location. The dollar amounts listed above were rough average estimates in late summer 2022.