If you've noticed your toes are getting scraped every time you walk across the bottom of your pool, you're likely staring down the barrel of the replaster pool process. It's one of those big home maintenance projects that can feel a bit overwhelming if you don't know what's coming. Most pool surfaces have a lifespan—usually about 10 to 15 years for standard plaster—and once that surface starts to get "chalky" or rough, there's really no shortcut around a full resurfacing.
The good news is that while the project is messy and loud for a few days, the end result is basically a brand-new pool. You aren't just fixing the leaks or the scrapes; you're hitting the reset button on your backyard's centerpiece. Let's walk through what actually happens once the crew shows up at your gate.
Draining the Water and Prepping the Site
Everything starts with the drain. You can't exactly plaster underwater, so your pool professional will drop a submersible pump into the deep end. Depending on the size of your pool, this can take anywhere from 6 to 24 hours. One thing people often worry about is where that water goes. Usually, it's sent into the clean-out port for your home's sewer system, rather than just dumping thousands of gallons into the street or your neighbor's yard.
Once the pool is bone-dry, the crew will start the inspection. They're looking for any structural cracks or "hollows" where the old plaster has detached from the gunite or shotcrete shell underneath. You might see them walking around tapping the walls with a hammer; they're listening for a specific "thud" that tells them the plaster is no longer bonded.
The Messy Part: The Chip-Out
If you're working from home during the replaster pool process, you'll definitely want some noise-canceling headphones for this stage. The "chip-out" is exactly what it sounds like. Workers use jackhammers and pneumatic tools to strip away the old, worn-out layer of plaster.
They don't always remove every single square inch of the old plaster down to the bare concrete, but they definitely have to "undercut" the tiles. This means they chip away the plaster right underneath the waterline tile and around all the lights and returns so that the new layer can sit flush. If they didn't do this, your new plaster would stick out further than the tile, which looks terrible and eventually leads to peeling. It's dusty, it's incredibly loud, and your backyard will look like a construction zone for a day or two.
Getting the "Glue" Ready
After the old stuff is gone and the shell is cleaned of all the debris, it's time for the bond coat. Think of this like the primer you'd use before painting a room, only much thicker and more industrial.
The bond coat is a specialized mixture of cement and polymers that creates a rough, "sticky" surface. Since the new plaster needs something to grab onto, this layer ensures that the final finish doesn't just slide off the old concrete shell over time. Some contractors might also do an acid wash during this phase to make sure any lingering oils or minerals are stripped away. Once the bond coat is on, the pool will look like it's been painted with a dark, gritty texture.
The Main Event: Application Day
This is the day when things finally start to look pretty again. A big truck—essentially a giant mixer on wheels—will pull up to the front of your house. They'll run long hoses through your side yard and down into the pool.
The crew will start spraying the plaster mixture onto the walls and floor. It's actually pretty impressive to watch. One person handles the hose, while several others follow behind with trowels, smoothing the material out by hand. They have to work fast because the plaster starts to set as soon as it hits the air.
If you chose a standard white plaster, the finish will be relatively smooth. If you went with a pebble finish or something with quartz mixed in, there might be an extra step where they spray off the top layer of "cream" to expose the stones. This gives the pool that beautiful, textured look that's so popular right now.
The Race Against the Sun
One of the most unique things about the replaster pool process is that you cannot leave a freshly plastered pool empty for long. Plaster cures best underwater. If it sits in the hot sun for too long without being submerged, it can crack, craze, or develop "shrinkage cracks."
As soon as the crew finishes the final trowel pass and the plaster is firm enough to support a bit of weight, they'll drop a garden hose (or two) into the deep end. Crucial tip: wrap a clean rag or a sock around the end of the hose. If the metal end of the hose sits directly on the fresh plaster, it can leave a permanent rust stain or a physical divot.
You'll be instructed to let the water run until the pool is completely full. Do not stop the water halfway through to save on your water bill or because it's getting late. If you stop the water, it will leave a permanent ring around the pool at that level. Let it run until it hits the middle of the tile line.
The First 30 Days: The "Babying" Phase
A lot of homeowners think that once the water is in, they can just jump in and start the BBQ. Not quite. The first month after the replaster pool process is actually the most critical time for the longevity of your pool.
The plaster is technically still "curing" for the first 28 to 30 days. During this time, the pH of the water will skyrocket as the plaster releases calcium into the water. You'll need to test the chemistry daily and add acid to keep things balanced.
You'll also have to brush the pool. A lot. Most pros recommend brushing the entire surface at least twice a day for the first two weeks. This keeps "plaster dust" from settling on the surface and hardening into a rough, sandpaper-like finish. It's a bit of a workout, but it's the only way to ensure the floor stays smooth and the color stays even.
Why Bother With All This?
It sounds like a lot of work (and it is), but a successful replaster pool process transforms the entire vibe of your home. Beyond the aesthetics, a fresh seal protects the structural integrity of the pool shell and makes the water much easier to chemically balance.
Plus, there's nothing quite like that first swim on a surface that doesn't feel like it's trying to exfoliate your skin. If you stay on top of the maintenance and the initial brushing, your new surface should stay looking pristine for a decade or more. Just remember to keep that hose running and keep that brush moving—your future self (and your feet) will definitely thank you for the effort.