Pools · Service

Pool resurfacing, timed properly and prepped properly

The recurring bill that comes with owning a concrete pool. Do it too early and you wasted money; too late and the shell underneath starts paying for it.

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In short

What is pool resurfacing?

Resurfacing replaces the interior finish of a concrete pool — the plaster, quartz or pebble layer that sits on the shell — without touching tile, coping, deck or equipment. The old finish is removed back to sound substrate, the surface is prepared and bonded, the new finish is applied, and the pool is refilled and started up on a specific schedule. It is a defined job with a defined crew, and the two things that decide whether it lasts are the preparation underneath and the water chemistry afterwards.

Triggers

Signs you need pool resurfacing

The surface feels rough or chalky underfoot and leaves a residue on your hand when you rub it
There are spreading areas where the finish has flaked or delaminated and you can see darker substrate beneath
Staining and mottling no longer respond to brushing, acid washing or chemical treatment
Exposed aggregate or bare patches have appeared in the deep end or around the returns
Your chemical consumption has crept up because a deteriorating surface is harder to keep balanced and harder to keep clean
The pool has become noticeably harder to keep algae-free in the same spots, which is often texture rather than chemistry

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The job

How pool resurfacing actually works

Assessment — is it the finish, or the shell?

A crew should distinguish between a worn finish on a sound shell and a finish failing because the structure beneath is cracked, moving or leaking. Those are different jobs with different prices.

Watch for: A quote given from photographs. Surface condition, waterline behaviour and whether the pool is losing water all need to be established on site before anyone commits to a price.
Drain-down, planned around groundwater

The pool is drained deliberately, with attention to the water table and to how long the shell will sit empty. In some soils and seasons this needs dewatering or timing rather than just opening a valve.

Watch for: Draining without any thought for hydrostatic pressure. An empty pool in saturated ground is the classic way to damage a structure that was perfectly fine the day before.
Removal and preparation — the part that decides everything

The old finish is chipped off or hydro-blasted back to sound material, hollow and delaminated areas are cut out, and the substrate is cleaned, etched and bonded ready to take the new layer.

Watch for: New finish applied over old. It is faster, it is cheaper, and it is the reason resurfacing jobs fail early. Ask explicitly whether the existing finish is being removed or coated over, and get the answer in the contract.
Repairs and details before the finish goes on

Cracks, hollow spots, tile line, main drain covers, light niches and return fittings are addressed while the pool is empty and accessible.

Watch for: Drain covers left as they are. Suction outlets are a life-safety item with specific requirements, and an empty pool is exactly the moment to confirm yours meets the current standard. Ask your contractor what applies.
Application, fill and the start-up schedule

The finish is applied and troweled, then the pool is filled continuously without stopping, and a start-up routine of brushing and chemistry begins immediately and runs for weeks.

Watch for: Being handed a full pool and no written start-up schedule. Most of the complaints about blotchy, streaky or scaled new plaster trace back to the first weeks, and almost none of them are covered by anyone's warranty.

Money

What does pool resurfacing cost?

Resurfacing is priced by surface area and by finish type — plain plaster at the bottom, quartz above it, pebble at the top — plus whatever repair the substrate needs once the old finish is off. Removal method and drain-down conditions also move it. See the Cost Guide for ranges.

See the full pool resurfacing cost guide — by material, size and region →

Pool volume and budget calculators → Surface area and volume drive the quote.

Straight answer

When pool resurfacing is the wrong call

Everyone else ranking for this is paid when you say yes. Here's when you shouldn't.

The pool is losing water and nobody has found out why. Resurfacing does not fix a leak in a fitting, a line or a structural crack — it just hides it under a new surface until it reappears. Get the leak located first.
You are within a year or two of a fuller remodel. Tile, coping, deck and equipment work all want the pool empty. Resurfacing now and remodelling shortly after means paying twice for the drain-down, the setup and the start-up.
Your water chemistry is the actual problem and nothing has changed. If aggressive or badly balanced water ate the last finish, it will eat the next one on the same schedule. Fix the routine, or budget a maintenance service, before you buy a new surface.
You have a fiberglass or vinyl-liner pool. This job is for a concrete shell. Fiberglass surface work and liner replacement are different trades with different specialists, and a plaster crew is the wrong call for either.
It is late in the season in a freezing climate. A new finish needs its start-up weeks and the pool needs to be running. Resurfacing that finishes as the pool needs closing is poor timing that you will see in the surface for years.

Before you sign

What to check when hiring for pool resurfacing

Are you removing the existing finish completely, or bonding over it?

The question that separates a resurfacing that lasts from one that fails early. Get the answer written into the scope, not given verbally.
How are you handling groundwater during the drain-down?

An empty shell in wet ground is a structural risk. You want a specific plan for this pool, this season.
What happens to the price if hollow or damaged substrate is found under the old finish?

It is common and it is invisible until removal. Agree the mechanism up front rather than mid-job.
Does my main drain and suction outlet arrangement meet current requirements?

Suction entrapment is a serious safety hazard, and the pool being empty is the cheapest moment in a decade to address it.
Which finish are you quoting, and what service life do you see from it in this area?

Plaster, quartz and pebble are not interchangeable on price or life. A quote that just says "new finish" is not comparable to anything.
Will you provide a written start-up schedule and who performs it?

The first weeks decide the appearance for years. Some crews do the start-up themselves; some hand you a sheet; some do neither.

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Local pros

Pool Resurfacing near you

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Related work

Often done at the same time

Pool Remodeling

When the finish is only part of the job

Concrete Pool Installation

The construction this cycle belongs to

Pool Leak Detection & Repair

Do this first if water is disappearing

Pool Maintenance Service

What protects the new surface

All pools services →

FAQ

Pool Resurfacing — questions people ask

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How do I know when my pool needs resurfacing?

Feel it rather than look at it. A finish nearing the end goes rough and chalky, leaves residue on your hand, and develops spreading flaked or delaminated patches where you can see a different material underneath. Stains that no longer respond to treatment and algae that keeps returning to the same rough spots are corroborating signs. Discolouration alone is not enough — plenty of stained finishes have years left and can be cleaned.

How long does pool resurfacing take?

The physical work is a matter of days to a couple of weeks depending on removal method, the amount of substrate repair found, and the finish being applied. What you should plan around is the whole out-of-service period: drain-down, work, refill — which for a large pool is not quick — and then the start-up weeks during which the pool needs specific care and daily attention even though it looks finished.

Why did my new plaster come out blotchy?

Usually the start-up. New plaster is chemically active in its early weeks and reacts to how it is filled, brushed and balanced — inconsistent fill, unbalanced water, or letting it sit without brushing all produce mottling, streaking and scale that then sets in permanently. Application technique and weather on the day also contribute. It is the most common complaint in this category and the most commonly disputed, which is exactly why you want the start-up schedule in writing beforehand.

Can I resurface a pool without draining it?

No. The finish is applied to a dry, prepared substrate, and preparation requires the old surface to be removed and the shell cleaned and bonded. Any product marketed as an in-water resurfacing is a patch or a coating, not a resurfacing, and should be evaluated on those terms. If draining is genuinely risky at your site because of groundwater, that is a reason to plan the drain-down carefully with a dewatering approach — not to skip it.

Should I change finish type while I am at it?

It is the natural moment to, since you are paying for the removal and preparation either way and the incremental cost is the material and the application. The trade is straightforward: plain plaster is cheapest and shortest-lived, quartz sits in the middle, pebble is the most durable and the most expensive with a distinctly different texture underfoot. Go and feel samples in a finished pool rather than choosing from a board — see Pools Materials.