Inground pools made of plaster are the most prevalent in the USA. There comes a time when the plaster begins to deteriorate and develop pits. Age and the years of chemicals eroding away the finish are to blame for this. Inadequate water balance frequently causes plaster to degrade. The mix or application of the plaster can contribute to several plaster finish issues. Plaster is a natural product and is intended to break down. Hard enough to last, yet flexible enough to be acid washed to remove a thin top coating.
So, when is it necessary to replast? Every 20 years or so, several people replaster the pool during renovations. Some people apply it more frequently to maintain a finer polish or to switch colors. Your pool technician shouldn't warn you that you need to replaster your pool or it will break. Cracks and bare places should be repaired since they are dangerous. But aesthetic considerations typically drive decision-making. Your plaster will eventually become ugly, discolored, and dull. It will be time to replast when you become bored of it.
There are many types of plaster finishes on the market these days. Now you have many choices in color and the look of the finish. Most are marble or quartz based but there are a few now that have pea gravel or a synthetic additive.
Draining Backyard Swimmingpool:
To plaster the pool, it must be empty. These days, you might wish to inquire about the regulations regarding pool water discharge into a sewer or stream with your county or state. It is advisable to do this before completely removing the chlorine. This can be done for you by a product called "Chem Out." Consider your options before adding chlorine to a stream because it will destroy the algae and have a negative impact on the entire eco system.
The hydrostatic relief valves must be opened anytime a pool is being drained. These are frequently dispersed around the pool's floor, in both the shallow and deep ends. Before they can be unscrewed and removed, these plastered-over white caps must be chipped away and made visible. Hydrostatic pressure, which is created when there is too much table water under the pool or when water is being pumped out of it, can lift the pool out of the ground. Pop! Hydrostatic plugs must be taken out during pool draining in order to allow the pool's excess water to fill up with water.
Plastering The Pool:
Every sort of plaster that is used is mixed in the same way. A sizable concrete pump truck called a "Plaster Rig" will be at the street or in the driveway, mixing white portland cement and marble dust before pumping it to the pool. Plasterers start spraying the mixture onto the pool's walls and floor there. They wear special stilts or peg shoes while moving about, leaving just 4 little holes that may be troweled out before they are finished. The procedure is quite similar to cake icing. To finish, they trowel the surface with a lengthy stroke.
Plastering takes between two and four hours. We need to get the fresh plaster underwater as soon as possible, therefore it must be completed quickly. The best times to plaster would be in the late afternoon or early cool morning. In order to fill the pool and spread the water, the hose is placed on the main drain cover. If the fill is not continued until it is complete, a water mark may result. Stress cracks from the plaster drying out too quickly will be noticeable on steps and top wall parts if not filled in time, which can take up to 24 hours, depending on daily temperatures. Plastering is both an art and a science, so I do not suggest trying it on your own.