In this video, the National Plasterers Council presents their current-held positions on the cause of calcium nodules (mineral growths) that sometimes occur on the surface of a plastered swimming pool or spa.
This video explains both types of the calcium nodule phenomenon (aggressive water chemistry, and debonding), along with the physical and chemical mechanisms behind their occurrence. Knowing which type of calcium nodule occurrence that is present, is important in understanding the cause and remedy.
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About the National Plasterers Council
National Plasters Council. For more than 25 years the NPC has been the utmost authority for in-ground swimming pool and spa cementitious interior pool surface applicators, material manufacturers, suppliers and distributors. Be sure to visit our site to find the latest news, technical updates, and events impacting the pool industry.
