![]() Unfortunately, if you notice delamination in your pool, it’s usually a sign of more nodules to come. Since you didn’t cause it and you don’t see any apparent underlying triggers, any pool owner who sees signs of pool plaster delamination wonders the same thing: will this problem become more severe, and if so, how do you take care of it? It’s also not caused by flaws in your maintenance routine, pool cleaning schedule, or anything else that you do to the pool regularly. What doesn’t cause delamination is pool water chemical balance. Ground shifting is another factor that can lead to delamination. Calcium hydroxide carbonates into a solid mass that seeps out on the pool’s surface and results in the nodules we see.īesides impact or stress on the plaster, certain environmental factors such as low humidity and excessive sun exposure or heat before filling the pool may cause this problem. These pinholes and hairline cracks allow water to get behind the pool’s plaster mass and dissolve calcium hydroxide. The problem happens when impact or stress on the plaster allows the void to reach the pool surface via a small pinhole or hairline crack, which are caused when the delaminated plaster experiences structural flexing. ![]() ![]() You might not even realize you have bond failure if the void doesn’t reach the plaster’s surface. In and of itself, having a void in your pool is not problematic. This bond failure creates an air cavity or a void. Pool plaster delamination occurs when there is a bond failure between the gunite and plaster that covers it. “Why is my pool plaster peeling?” or “Why is my plaster changing color?” When pool owners see the signs, their first thought is: Given the fact that most people who have a pool spend lots of time taking care of it, noticing pool plaster delamination is worrisome-and frustrating. The damage becomes much more visible once a pop-off forms and this particular problem is more common in re-plastered pools whose newer surfaces often have trouble bonding to the gunite or concrete walls of your pool. You may not notice delamination happening until pop-offs occur. Everyday pool use, such as repeatedly stepping on the affected area, or your pool cleaner moving over the blisters, cause these prominent blisters on the plaster to break off from the plaster surrounding it. Pop-offs happen when the volcano-like blisters and bubbles we can see on the pool surface increase significantly in size. Pool Plaster Peeling & Popping Offĭelamination also occurs in another form, known as pop-offs. If they absorb other elements, they can be different colors as well, but generally, they’re white. While delamination formations are generally easy to identify based on the features we’ve already mentioned, another distinguishing characteristic is the color.ĭelaminated areas are usually white, though they do sometimes become grey over time. On vertical surfaces, however, they tend to look more like drips or stalactites.ĭelamination can occur in small areas two to three inches in diameter, or it can form in wide expanses of three to four feet, or even more. ![]() They’re easy to recognize because of their strong resemblance to bird droppings.Ĭalcium nodules are usually round, and they look somewhat like volcanoes when they form on horizontal surfaces. These blisters or bubbles are calcium nodules or small buildups of calcium carbonate on the pool surface. Once you know what to look for, the outward signs are unmistakable: blisters or bubbles that form on the surface of the swimming pool. We’ll talk about the causes in the next section, but first, let’s talk about how to identify delamination. You’ve probably seen pool plaster delamination in a pool at some point without knowing what it was. Here’s everything you need to know to identify this unsightly pool concern and how to solve this issue. One of the most common-and often bewildering-problems that pool owners face is pool plaster delamination. It’s no secret that pools require yearlong upkeep in the form of servicing, cleaning, and maintenance, but sometimes, despite the most dedicated care, pools become susceptible to unexpected issues that regular service doesn’t prevent. ![]()
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