They say your swimming pool is an extension of your living room; a place to stay and hang out with friends and families after a long, busy day. Having a private pool offers you an escape the moment you step out into your own backyard.

That’s why many pool owners take the time to invest in their swimming pools. While pool cleaning plays a major role in pool maintenance, those who want to keep their aquatic oasis in pristine condition hire pool professionals who offer pool services like pool remodeling, pool resurfacing, and plaster pool service.

Amongst these services, pool plastering is often the most overlooked maintenance solution applied to your private pool. Pool plaster is the skin that separates the water and the concrete pool. It offers various advantages including its aesthetic appeal and a smooth surface but what it’s better known for is its ability to create a watertight seal between the pool water and the rough underlying surface.

Pool Plastering: The Basics

Plastering a pool isn’t exactly rocket science. There are tons of blogs and videos online that will tell you how to do it.

What’s too hard when all you need to do is to apply a thin layer of mortar inside your pool?
While the process sounds a bit too rudimentary, doing it yourself can cause unnecessary expenses. That’s to cover all the costs of having to try things out the first time and believe us when we say there are a ton of ways you can mess this up. So, unless you plaster pools for a living, it’s best to leave this arduous task to the pros.

When done by professionals, plaster pool service can be finished in a day. A seven-hour job for an average-sized private piscina, although the duration of the project depends heavily on the expanse of your pool. We, at Stanton Pools, are proud to have been consistently providing fast and efficient pool plastering services in the cities in Ventura County and the Conejo, Simi and San Fernando Valleys. That said, we’re best known for our Winnetka pool plastering, Chatsworth pool resurfacing, and Canoga Park pool maintenance services having been provided by the best professionals in the said area.

Here’s a quick run-down of what we do.

We begin by draining your pools. This is the first and is one of the most crucial parts of the process as draining your pool gives us an idea of how much work is to be done.

Next, after we’ve done our assessment of the plaster infrastructure, we begin chipping out the old plaster to make way for the new one. Your thoughts on how you want your pool designed will play a vital part in how the plaster is applied. Chipping out the old plaster is completed immediately the day after draining the water.

After which, tile and coping are applied to give your pool the visual and aesthetic face-lift it deserves. We will then apply the new surface right after the tile and coping are applied. Depending on the material you’ve chosen, the application process may take a day or two.

Lastly, we refill the pool with water. We will also balance the chemical composition of the water as this is crucial to the process of pool plastering. Having been sitting in the pool the longest, how well the water is maintained will significantly affect the longevity of your pool plaster.

Here’s why.

Water and Pool Plaster

At Stanton Pools, we take pool water seriously.

Our Agoura Hills pool resurfacing, West Hills pool resurfacing, and Moorpark pool resurfacing all include the process of taking good care of the water to maximize the lifespan of the plaster in the pools we service.

The water’s pH level is indicative of the condition of the plaster.

Water below 7.0 pH can cause the plaster to erode, removing the sleek patina on the plaster’s surface. When the smooth surface begins to corrode, it will cause the layer to become coarse. Rough surfaces can cause anything from torn swimsuits to damaged skin.

pool water - stanton pools

Should the water’s pH level go beyond 8.0, the plaster may begin to develop stains and scaling. These stains may be hard to remove and can contribute to the contamination of the water in the pool.

Apart from the pool water’s pH level, the concentration of calcium in the water will also affect the quality of the plaster. While the same mineral is found in every type of pool plaster, inconsistent and improper calcium concentration can ruin the plaster. Deposits will develop in the plaster when there is too much calcium in the water, while insufficient amounts of calcium may weaken the plaster.

These factors are heavily considered in our Northridge pool plastering services as well as when finishing our Hidden Hills pool remodeling, Northridge pool remodeling, and our Simi Valley pool remodeling.


There is a slew of other issues relating to bad pool water and how it affects your pool plaster.

Stains are some of the most common concerns we encounter.

pool plaster stains

1. Organic Stains

Probably the easiest to deal with. Organic stains are caused by plant matter that is situated near your pool. They will stain your plaster with a brown or green hue depending on the component of the plant that’s exposed to the water.

Leaves will leave green stains due to chlorophyll, while twigs and stems will leave a brown hue probably due to the acids in the plant matter.

These stains will not stay in the plaster for long as chlorine in the water will bleach the plaster.
These stains are common in pools located in places like Tarzana where vegetation is common. That said, our Tarzana pool service and our West Hills pool service take organic stains into account.

2. Pool Plaster Mottling

It’s not uncommon for pools to experience pool plaster mottling. Mottling is when the pool plaster shows a variation of color due to several other reasons including the actual troweling process and hydration.

Mottling is more obvious on darker plasters but can sometimes manifest on pool plasters of lighter shades. While there are many techniques to decrease the effects of mottling on your plaster, such as calcium and pH reduction, very little can be done to remedy the effect of heavy pool plaster mottling on your plasters because of how muriatic acids affect the pool plaster.

3. Dissolved Metals

Metal stains refer to the discoloration caused when metals saturate the water. Metals such as iron and copper can trigger the formation of metal stains.

They will be generally hard to remove and will be easy to spot. Stains of copper metal will appear as streaks and splotches of blue-green hues on the plaster of your pool while stains from iron will generally be in black or brown.

These stains are hard to deal with, that’s why we take extra care on our Simi Valley pool service as the area is known for its local metal industry.

Water often causes aesthetic issues on the plaster of your pool. But the fact that it damages the surface of the plaster does not mean that it’s nothing. When left unattended, these simple stains can cause cracks and fissures that can ultimately call for an immediate pool plastering.

Pool Plaster Cracks

Like the stains we’ve mentioned above, cracks on the plaster are not uncommon in swimming pools.

Your swimming pool is just like your home, your vehicle, or even your body. Time wears it down and it will eventually show signs of wear and tear. Your swimming pool plaster may develop several crevices from a slew of other reasons.

Plastering your pool on a hot day can be one. That’s why pools located in areas with a hot climate like the Simi Valley may encounter cracks on the plaster of their pools. Our Simi Valley pool service, Simi Valley pool remodeling as well as our Northridge pool remodeling can address these issues.

pool plaster cracks

Plaster cracks are not a defect in the process of plastering but rather a natural phenomenon as plaster will tend to shrink after its application. With this in mind, we ensure that we take the necessary measures to prevent the plaster we applied in your pool from easily rupturing. The products of our Agoura Hills pool resurfacing, Moorpark pool resurfacing, West Hills pool resurfacing, Chatsworth pool resurfacing, and Winnetka pool plastering will show the superior craftsmanship of Stanton Pools.

Also, checking the overall integrity of the pool will reveal the flexibility of the concrete structure. Settling of the supporting soil on the pool may likely put the pool under some stress and cause these cracks to appear.

Pool Plastering Alternatives

All right, pool plastering or pool resurfacing may sound like a big project. So, here are a few other alternatives to covering up your pool plaster.

  1. Patching – More of a temporary solution. Patching up plasters will not last las long and will often not match the actual pool plaster.
  2. Acid Wash – While acid wash can be effective in removing stains, it can wear the plaster down faster.
  3. Paint – Not just any paint, but paint designed to last underwater and chemical exposure.
  4. Tile – Definitely the most economical. Tiles will last forever but will cost you.

Stanton Pools Pool Plastering

If you’ve decided that it’s time you give your pool the proper treatment, make sure to call the best in the business.

The projects we worked on in our Hidden Hills pool remodeling and West Hills pool service prove our commitment to a superior quality pool plastering. When beginning a pool plaster project by carefully chipping out the old plaster, we set your pool up for success. This is done by using precision tools like pneumatic tools and jackhammers. Don’t worry, we’ll protect your backyard the same way we do the concrete below the plaster. Rest assured that your property is safe when you do business with Stanton Pools.

pool plaster - stanton pools

When applying the plaster, we may try a different approach depending on the structure of the pool. Otherwise, we will generally start at the deep end of the pool carefully working our way up until we reach the deck of your pool. When conducting our Canoga Park pool maintenance, we see to it that we apply the proper amount of plastering to ensure longevity and the overall structural quality of the pool. Likewise, when we conduct our Tarzana pool service, we ensure that the materials we use to maintain the pools in this area are of the best quality and the procedure taken to apply them is taken with utmost care.

We at Stanton Pools know how crucial pool plastering contributes to the aesthetic and structural quality of your slice of paradise. We know there’s more to just brushing and wiping the surfaces of the plaster and ridding it of stains. That’s why in our Northridge pool plastering services, we provide a thorough cleaning of the plasters to ensure they’ll look good and will last longer.

Once the pool plaster has settled, we can now start the final process – the start-up. Pretty much like starting up a vehicle or booting up a new computer, the start-up process will let us know and assess the final product. The start-up process involves several other finishing touches beginning with brushing the finished surface to remove any remaining plaster dust. This ensures that when we fill the pool with water, dust particles won’t float or sink into the bottom – something that your filters will have to deal with. We also clean the said filters and finish off by vacuuming the pools.

After this, we begin testing and checking the water chemistry once the pool is filled with water. Stanton Pools checks for the pool water’s pH level, its alkalinity, the presence and level of chlorine, as well as calcium hardness, and various acid levels.

We’re confident in our dedication to plaster pool service and our passion for pool resurfacing. No one does pool resurfacing as we do. That’s why we’re rated number one in the Los Angeles and Ventura County for the best pool remodeling and best pool maintenance and pool cleaning service. Our services simply can’t be beaten.

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