What pool plastering is
Pool plaster is a cement-based coating troweled onto the pool shell to create the finished interior surface. Traditional white plaster, commonly called marcite, blends white cement with marble dust or similar fine aggregate. Colored plasters use pigments or tinted aggregates to change how the water appears.
Plaster is applied over a properly prepared concrete shell such as gunite or shotcrete. It is the finish many pools were originally built with, and it is still a common choice when replacing a worn surface.
How plaster affects the look of your water
The color of the plaster drives the color of the water. White plaster tends to give a light, bright aqua. Grey or blue-tinted plasters make the water look deeper and darker. Because the effect depends on depth, lighting, and the sky, it is worth looking at samples on your own property rather than judging by a photo.
Where plaster fits well
Plaster is a good match for owners who value a smooth feel underfoot, who want a classic look, or who are working within a budget and expect to replaster again down the road. It is generally the most affordable of the common finishes up front, though total cost of ownership depends on how the pool is maintained.
- Smooth surface that is comfortable on bare feet
- Wide range of white and colored options
- Well suited to owners who plan to keep water chemistry consistent
- A familiar, easy-to-explain finish for first-time replasterers
Trade-offs to weigh
Plaster is more sensitive to water chemistry than aggregate finishes, especially in the first few weeks. Water that is too aggressive can etch the surface, while water that is scale-forming can leave deposits. Stains from leaves, metals, or algae can be more noticeable on plain white. None of that is a reason to avoid plaster, but it is a reason to pair a new plaster surface with careful start-up and water care.
What to expect from our process
We look at the pool in person, check the current surface for cracks, hollow areas, and loose tile, and explain your options. If the old surface is failing widely, we will typically recommend full resurfacing. If you are comparing finishes, we can talk about quartz and pebble alongside plaster so you can weigh look, feel, and cost together.