Pools
Pool resurfacing cost
A 16 × 32 ft gunite pool is 512 square feet of water and 994 square feet of surface to coat, which is where most of the surprise in a quote comes from. Plaster runs about $9,787 and pebble $16,000 — and per year of service the expensive one is the cheaper, because half the job is paid whatever goes on the walls. Then there is the first month, which decides how it looks for fifteen years and is covered by no warranty anywhere.
Written and edited by Pablo Ruiz Quintero
Last reviewed 2026-09-22 · Nothing you type leaves your browser
Priced on the interior, not on the water
A resurfacing is quoted on the floor plus the walls, which is about twice the surface you can see. And roughly half the job is fixed whatever goes on it — which is why the cheapest finish is not the cheapest to own.
Sprayed or poured concrete with a plaster finish over it. This is the pool that gets resurfaced, and this page is about it.
Length times width, and nothing to argue about. Most inground pools and every lap pool.
Inside the walls, at the water line.
Inside the walls, at the widest point.
Gunite and concrete pools. A gunite pool usually has a shallow shelf, a transition slope and a deep floor.
Water depth.
At the deepest point.
The finish
White cement and marble dust, the traditional finish and still the most common. It is the one most sensitive to start-up chemistry — every mottling and blotching complaint in the trade is about white plaster, because on a white surface there is nothing to hide behind.
A bonding layer goes over what is there and the new surface goes over that. Faster, cheaper and much less brutal — and it adds another layer to a shell that can only take so many.
Each layer makes the next one harder, and the shell only takes so many. If nobody knows, assume more rather than fewer.
Replaced during a resurfacing because now is the only time it is reachable.
The cell stays off for about 30 days while the surface cures.
Off your own bill. The pool is emptied and refilled, and nobody quotes the water.
Used only to pick a regional labour rate. It stays in your browser.
White plaster, or marcite · 994 ft² of interior
$9,787
$9.85 a ft² · $979 a year over 10 · 19,246 gal to refill
994 ft² of surface, 512 ft² of water
The interior is 1.9 times the surface you can see, because the walls are most of it. Bringing the area of the water to a quote is the commonest way a resurfacing estimate comes in at about half of what the job is.
Nobody is paid to do this and it decides everything
28 brushings in the first 14 days
New plaster cures under water and keeps curing for weeks. It sheds calcium, drives the pH up hard, and the dust it gives off will bond permanently into the finish if it is not brushed away. Twice a day, the whole surface, for a fortnight.
Mottling, grey blotching and spot etching are start-up chemistry, not product faults — which is exactly why every plaster warranty excludes them.
And the salt cell stays off for about 30 days. The pool runs on liquid chlorine for its first month.
The cheapest finish is not the cheapest to own
Same pool, same preparation, same water. Watch the order change.
What the job is made of
- Bond coat over the old surface
A bonding layer goes over what is there and the new surface goes over that. Faster, cheaper and much less brutal — and it adds another layer to a shell that can only take so many.$1,491 - White plaster, or marcite, 994 ft²
White cement and marble dust, the traditional finish and still the most common. It is the one most sensitive to start-up chemistry — every mottling and blotching complaint in the trade is about white plaster, because on a white surface there is nothing to hide behind. Published life 7 to 12 years.$5,219 - Waterline tile, 96 linear ft
The band of tile at the water line. It is replaced during a resurfacing because this is the only time it is reachable, and because a new interior against thirty-year-old tile looks exactly like what it is. Skipping it saves real money and it is the saving people regret.$2,496 - Refilling, 19,246 gallons
And it cannot be filled in stages — a fill that stops leaves a permanent line where the surface cured differently.$135 - Start-up chemistry
Sequestrant, acid, bicarbonate and chlorine through the first weeks, plus the whole salt charge once the cell can finally go on. The brushing is free and it is the part that matters.$447
What it costs
National average. White plaster, or marcite over 994 ft² of interior, bond coat over the old surface, refilled and started up, with new waterline tile. Not included: coping, decking, the pump or the filter, and any structural repair to the shell itself.
$979 a year over the 10 this finish usually lasts, which is the only fair way to hold a ten-year plaster against an eighteen-year pebble. The gallons and the interior area both come from the shape of the pool, and the salt charge that goes back in once the cell can run is a calculation of its own.
Worth knowing
- This is quoted on 994 ft² of interior surface — the floor plus the walls — against 512 ft² of water. The interior is 1.9 times the surface you can see, and bringing the wrong one of those two numbers to a quote is the commonest way a resurfacing estimate comes in at half of what it should.
- Bonding over the existing surface saves about $1,491 against chipping it off, and it is a reasonable choice on a shell that has not been resurfaced more than once or twice. Know how many layers are already there before agreeing to it: bond coats fail at the bond, and each one makes the next resurfacing harder.
- The first month is not a formality and it is not covered by anything. New plaster cures under water and keeps curing for weeks: it needs a fill that never stops, brushing the whole surface 2 times a day for about 14 days, and the pH held down through the alkaline surge the surface produces. That is 28 brushings that somebody has to do, and nobody is paid to do them.
- Leave the salt cell off for about 30 days. A curing surface and a chlorine generator do not mix, and the cell is also the thing most likely to drive the pH up at exactly the moment it must not go up. The pool runs on liquid chlorine for its first month — which is inconvenient, and cheaper than a blotched surface that cannot be undone.
- By cost per year of service rather than by price, this pool goes white plaster, or marcite $979, quartz aggregate $933, pebble $889, tiled throughout $1,210. Pebble works out cheapest per year, because the fixed half of the job — draining, prep, tile, water and start-up — is paid whatever goes on the walls, and a longer-lived surface spreads it further.
On this page — 4 sections
Quoted on the walls, not on the water
The short version
- 994 ft² of interior against 512 ft² of water — 1.9 times, and the walls are most of it.
- Half the job is fixed whatever goes on the surface, so the cheapest finish is the dearest to own.
- Pebble is cheapest per year at $889, despite costing the most up front of the plasters.
- The first thirty days decide the look for fifteen years, and no warranty covers them.
The first thing to settle is whether this page is about your pool at all. Only gunite and concrete pools are resurfaced. A vinyl pool has a liner and gets a new one; a fibreglass pool has a gelcoat and gets that refinished. Both are different jobs at different prices, and almost everything written about “resurfacing a pool” talks as though every pool were the same.
The second is the area. A resurfacing coats the floor and the walls, and the walls are most of it. This 16 × 32 ft pool has 512 square feet of water and 994 square feet of interior. Bring the first number to a quote and the estimate will look like half a job, because it would be.
| Bond coat over the old surface | $1,491 | Or days of jackhammers, if the shell is full |
| White plaster, 994 ft² | $5,219 | Floor and walls, at the interior area |
| Waterline tile, 96 ft | $2,496 | Only reachable while the pool is empty |
| Refilling 19,246 gallons | $135 | Continuously — a fill that stops leaves a line |
| Start-up chemistry | $447 | The brushing is free and matters more |
| The job | $9,787 | $9.85 a square foot of interior |
MaterialsEstimator, Pool resurfacing price survey — plaster, quartz, pebble and tile · checked 2026-09-22
The cheapest finish is the dearest to own
Once the pool is drained, the old surface is off and the tile is out, a great deal of the money has already been committed — and none of it depends on what goes on the walls next. Draining, preparation, tile, water and start-up are the same job whether the finish is plaster or pebble.
Which means the sensible way to compare finishes is not by price. It is by cost per year of service, and that reorders the list.
| Finish | The job | Life | A year | Notes |
|---|---|---|---|---|
| Pool paint · interim | $6,756 | 3–7 yr | $1,351 | Not a finish — a way to defer the decision |
| White plaster, or marcite | $9,787 | 7–12 yr | $979 | |
| Quartz aggregate | $12,123 | 10–16 yr | $933 | |
| Pebble | $16,000 | 15–25 yr | $889 | Cheapest per year, and dearest on the day |
| Tiled throughout | $33,881 | 20–40 yr | $1,210 | Outlasts everything and costs like it |
Same pool, same preparation, same water, same start-up. The only thing changing down the table is what goes on the walls — and the cheapest and the dearest columns do not agree.
Latham, Tara and GLI, Vinyl pool liner product specifications and warranty terms · checked 2026-09-22
The month nobody is paid for
Here is the part of a resurfacing that almost nobody is told about, and it is not a detail. New plaster is not finished when the crew leaves.
It cures under water, and it keeps curing for weeks. While it does, it sheds calcium — which drives the pH up hard and leaves a fine dust on the surface. Brush that dust away and it is nothing. Leave it and it bonds permanently into the finish.
So the first month is a procedure: a fill that never stops, the entire surface brushed 2 times a day for about 14 days — 28 brushings — and acid daily to hold the pH down through the surge. It is unglamorous, it cannot be skipped, and it appears on no invoice.
| What goes wrong | Why | Reversible |
|---|---|---|
| Mottling and grey blotches | Uneven hydration and calcium coming out of the surface at different rates, usually from a fill that stopped, from inconsistent brushing, or from the pH running high in the first week. | no |
| Plaster dust that never clears | The fine calcium film left on the surface. It brushes off in the first fortnight and bonds to the finish if it is left. | yes |
| Scaling and a rough waterline | Calcium precipitating out because the pH was allowed to rise while the surface was giving it off. | no |
| Spot etching and pitting | Acid sitting on one place — most often a tablet in a floating dispenser resting against the wall, or undiluted acid poured in one spot. | no |
| A permanent ring at the water line | Filling the pool in stages instead of continuously. Where the water stopped, the surface cured differently. | no |
The first thirty days
- Fill continuously from the moment it starts. Do not stop overnight — where the water stopped, the surface cures differently and the line is permanent.
- Do not let a hose end rest against the new surface. Put it on a cloth or through the skimmer.
- Brush the entire surface 2 times a day for 14 days, walls as well as floor, including behind the steps.
- Test and adjust pH daily through the first two weeks. A curing surface pushes it up and it must be brought back down.
- Add acid diluted and with the pump running. Never pour it in one spot — that is exactly how spot etching happens.
- No chlorine tablets in a floating dispenser. One resting against a wall will etch a mark that stays there for the life of the finish.
- Leave a salt cell off for about 30 days and run on liquid chlorine.
- Keep the pool clear of anything that can sit on the floor — a leaf left for a week can leave a mark.
- Expect the water to look cloudy for the first days. That is the plaster dust, and it means the brushing is working.
National Plasterers Council, Start-Up Card and technical guidance for new pool plaster · checked 2026-09-22
What goes wrong
01Pricing it on the area of the water
A resurfacing covers the floor and the walls — 994 ft² here against 512 ft² of water. The walls are most of the job.
Instead — Work out the interior surface from the pool's geometry before speaking to anybody, so the quotes have something to be checked against.
02Choosing the finish on price
About half the job is fixed whatever goes on the walls, so a short-lived finish pays that half again much sooner. Pebble is $889 a year against $979 for plaster, while costing more on the day.
Instead — Compare per year of service — unless the house is being sold soon, in which case the per-year figure is genuinely the wrong question.
03Treating the start-up as a formality
New plaster cures under water for weeks. Skipped brushing, a fill that stopped or pH left high produce mottling and etching that are permanent — and excluded from every warranty.
Instead — Agree who is doing the 28 brushings and the daily acid before the work starts, in the same conversation as the price.
04Bonding over a shell that is already full
Each resurfacing adds a layer and the shell takes about 3. Beyond that a bond coat fails at the bond, and it takes the new surface with it.
Instead — Find out how many layers are there. If nobody knows, assume more rather than fewer — chipping costs about $1,491 more and it is cheaper than doing the job twice.
05Turning the salt cell on straight away
A curing surface and a chlorine generator do not mix, and the cell drives pH up at exactly the wrong moment.
Instead — Liquid chlorine for about 30 days. Then the whole salt charge, because a refilled pool has none.
06Keeping the old waterline tile
It saves about $2,496 and it is the only moment it is reachable. New plaster against decades-old tile looks exactly like what it is.
Instead — Decide it deliberately rather than by omission. If the tile is genuinely sound and matches, keeping it is defensible — just make it a decision.
07Filling the pool in stages
Where the fill stopped, the surface cured differently, and the line that leaves is permanent. It is one of the most common causes of a visible ring on a brand new surface.
Instead — Start the fill and do not stop it. If the supply cannot manage it, arrange a tanker rather than pausing overnight.
08Assuming every pool gets resurfaced
Only gunite and concrete do. A vinyl pool gets a liner and a fibreglass pool gets a gelcoat, and both are priced completely differently.
Instead — Check the shell first. If the interior is a printed sheet with a soft feel underfoot, it is vinyl and this is the wrong page.
| What decides how long it lasts | What gets sold as deciding it | |
|---|---|---|
| The first month's chemistry | More than anything else, and it is free | — |
| pH held in range year-round | Substantially | — |
| Calcium hardness kept up | Yes — soft water dissolves plaster | — |
| The finish chosen | Real, and roughly a factor of two | Sold as the whole answer |
| Chipping rather than bonding | Matters once the shell is full | Sold as always worth it |
| The warranty | Excludes chemistry, which is most failures | Sold as ten or fifteen years |
$9,787
Plaster, with new tile
994 ft² of interior
$889
Cheapest per year
Pebble, at $16,000 on the day
1.9×
Interior against water
The walls are most of the job
28
Brushings in the first fortnight
On nobody's invoice
- 01Check what the pool is made ofOnly gunite and concrete pools get resurfaced. A vinyl pool gets a new liner and a fibreglass one gets a gelcoat, and both are different jobs at different prices.
- 02Work out the interior surface, not the waterFloor plus walls, which is roughly twice the area of the water. This is what the job is quoted on and it is where half the surprise comes from.
- 03Find out how many layers are already on the shellEach resurfacing adds one, and after about 3 the shell cannot take another. It is the difference between a bond coat and days of jackhammers.
- 04Compare finishes by cost per year, not by priceAbout half of a resurfacing is fixed whatever goes on the walls, so a finish that lasts twice as long spreads that half over twice as many years.
- 05Decide the waterline tile nowIt is only reachable while the pool is empty, and new plaster against thirty-year-old tile looks exactly like what it is.
- 06Price the water separatelyThe pool is drained and refilled, and no resurfacing quote includes it. The fill also has to be continuous.
- 07Agree who does the start-upTwice-daily brushing for a fortnight and daily acid through the alkaline surge. If the contractor is not doing it, you are — and it is not optional.
The interior surface this is quoted on, the perimeter the tile is bought by and the gallons the refill costs all fall out of the pool’s geometry — and the average-depth formula most people use gets the volume wrong by about 17 per cent on a pool with a hopper bottom.
Where the areas come from- Interior surface
- The floor plus the walls — what actually gets coated. On this pool it is 994 ft² against 512 ft² of water, and it is the number a resurfacing is quoted on.
- Plaster, or marcite
- White cement and marble dust troweled onto the shell. The traditional finish, the cheapest, and the one most sensitive to start-up chemistry because a white surface hides nothing.
- Quartz aggregate
- Plaster with graded quartz through it. Harder, more resistant to etching, and its texture disguises the small variations a white surface displays.
- Pebble
- Small river pebbles in a cement matrix, exposed by washing the surface back as it sets. The longest-lived finish short of tiling, and the most forgiving of imperfect chemistry.
- Bond coat
- A bonding layer over the existing surface so a new one can go on without chipping the old one off. Cheaper and faster, and it adds a layer to a shell that can only take so many.
- Chip out
- Removing the old surface with jackhammers back to the gunite. Expensive, filthy and the right answer once the shell carries two or three layers, because bond coats fail at the bond.
- Start-up
- The first month after a resurfacing, during which the surface is still curing under water. It is a procedure rather than a product, it is not on any invoice, and it decides how the pool looks for the rest of the finish's life.
- Mottling
- Grey blotching in a cured plaster surface, caused by uneven hydration — a fill that stopped, inconsistent brushing, or pH allowed to run high in the first week. It is permanent and it is excluded from every plaster warranty.
- Plaster dust
- The fine calcium film a new surface sheds as it cures. Brushed away it is nothing; left alone it bonds into the finish.
- Spot etching
- Pitting where acid has sat in one place — most often a chlorine tablet in a floating dispenser resting against a wall, or undiluted acid poured into one spot.
- Waterline tile
- The band of tile at the water line. It is replaced during a resurfacing because that is the only time it is reachable, and because new plaster against old tile looks exactly like what it is.
- Gunite
- Concrete sprayed against a steel cage to form the pool shell. It is the pool that gets resurfaced — a vinyl pool gets a liner and a fibreglass pool gets a gelcoat.
Common questions
- How much does it cost to resurface a pool?
- For a 16 × 32 ft gunite pool — 994 ft² of interior surface — about $9,787 in white plaster with new waterline tile, $12,123 in quartz and $16,000 in pebble. That includes preparation, the finish, the tile, refilling 19,246 gallons and the start-up chemistry. Without new tile the plaster job is about $7,291.
- Why is the quote higher than I expected?
- Usually because of which area it is priced on. A resurfacing covers the floor <em>and the walls</em> — 994 ft² on this pool against 512 ft² of water. The interior is 1.9 times the surface you can see from the deck, and bringing the smaller number to a conversation is the commonest way an estimate comes in at half of what the job is.
- Is pebble worth it over plaster?
- By price, no — it is about $6,213 more. By cost per year of service, yes: $979 a year for white plaster, or marcite, $933 a year for quartz aggregate, $889 a year for pebble, $1,210 a year for tiled throughout. The reason is that roughly half of a resurfacing is fixed — draining, preparation, tile, water and start-up are paid whatever goes on the walls — so a finish that lasts nearly twice as long spreads that half over nearly twice as many years.
- How long does pool plaster last?
- 7 to 12 years for white plaster, or marcite, 10 to 16 years for quartz aggregate, 15 to 25 years for pebble, 20 to 40 years for tiled throughout. The spread inside each of those ranges is wide, and what decides where you land in it is mostly water chemistry — particularly in the first month, when the surface is still curing.
- What happens in the first month after resurfacing?
- More than anybody expects, and it is not on the invoice. New plaster cures under water and keeps curing for weeks: it sheds calcium, drives the pH up hard, and the dust it gives off bonds permanently into the finish if it is not brushed away. That means a fill that never stops, brushing the entire surface 2 times a day for about 14 days — 28 brushings — and acid daily to hold the pH down. Nobody is paid to do it and it decides how the pool looks for fifteen years.
- Why is my new pool plaster blotchy?
- Almost certainly start-up chemistry rather than a bad batch. mottling and grey blotches, scaling and a rough waterline, spot etching and pitting, a permanent ring at the water line all come from the same few causes: a fill that stopped, brushing that was skipped, or pH left to run high while the surface was giving off calcium. The uncomfortable part is that every plaster warranty excludes chemistry-caused defects, so the homeowner pays for a surface, does nothing they knew was wrong, and has no claim.
- Can I turn my salt system on after resurfacing?
- Not for about 30 days. A curing surface and a chlorine generator do not mix, and a cell is also the thing most likely to push the pH up at exactly the point it must not go up. The pool runs on liquid chlorine for its first month — inconvenient, and far cheaper than a permanently blotched surface.
- Should the old surface be chipped off or bonded over?
- Bonding saves about $1,491 on this pool and is reasonable on a shell that has been done once or twice. Chipping is the right answer once there are 3 layers or more, when the old surface is delaminating, or whenever the job needs to last — because a bond coat fails at the bond rather than in the material. Find out how many layers are already there before agreeing to another one.
- Do I need to replace the waterline tile?
- Not strictly, and it is about $2,496 on this pool. But it is only reachable while the pool is empty, and a new interior against decades-old tile looks exactly like what it is. Skipping it saves real money and it is the saving people regret.
- Can you resurface a vinyl or fibreglass pool?
- No — those are different jobs. Vinyl liner: it is not resurfaced — it gets a new liner, which is a different job at a different price. Fibreglass: when the gelcoat goes it is refinished with a gelcoat or an epoxy system, which is neither plastering nor relining. Getting this wrong is the first mistake available on this subject, and it is easy to make because everything online talks about "resurfacing a pool" as though every pool were the same.
- Is painting a pool a cheaper alternative?
- It is cheaper on the day — about $6,756 against $9,787 — and it is the most expensive option per year of service on this page at $1,351, because it lasts perhaps 5 years and the fixed half of the job gets paid again that much sooner. It also has to be compatible with whatever is already on the shell, and repainting means stripping first. It is a way to defer a decision rather than a finish.
- How long does the job take?
- Three to seven working days for the work itself — drain, prep or chip, tile, apply the finish — then the fill, then a month of start-up during which the pool is usable but the surface is still curing. Chipping adds days and a great deal of noise. The fill cannot be paused once it starts.
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About the author
Pablo Ruiz Quintero — Editor
Editor of MaterialsEstimator. Decides which documents count as a source, what every default value is, and where the line sits between what the reader parses and what the engines compute.
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