Pool Replastering
Replastering is resurfacing with traditional white plaster — the cement and marble-dust finish that has lined pools for decades. It is the cheapest way to renew an interior surface, and the shortest-lived.
What plaster is, and what it is not
Pool plaster — marcite — is a mix of white cement and finely ground marble dust, troweled onto the shell and cured underwater. It produces the bright, uniform, classic blue water most people picture when they think of a swimming pool.
It is also the softest of the common finishes. Marble dust is calcium carbonate, which dissolves in acidic water, so plaster is genuinely sensitive to chemistry in a way pebble is not. Well maintained, it lasts a decade or more. Neglected, it can be rough within five years.
When replastering is the right choice
- You want the classic white-plaster look. No aggregate finish reproduces the same uniform brightness. If that appearance matters to you, it is a legitimate reason on its own.
- Budget is the binding constraint. Plaster is roughly half the material cost of pebble. On a large pool that gap is thousands of dollars.
- You are preparing to sell. A fresh plaster finish presents well and costs less than an aggregate one. Just be straightforward with buyers about the finish and its age.
- Your water chemistry is genuinely well managed. Plaster rewards consistent maintenance. Professional weekly service, or a diligent owner, gets far more life out of it.
When to spend more instead
Plaster is a false economy in a few common situations, and it is worth being honest about them before committing.
- Hard-water regions such as Phoenix or Las Vegas, where high calcium accelerates scaling and etching on a soft finish.
- Pools in year-round use, which accumulate wear faster than seasonal ones.
- Households that would rather not think about water chemistry weekly. Aggregate finishes are considerably more forgiving.
- Any case where you expect to own the property for fifteen-plus years — over that horizon plaster usually costs more, not less, because you will pay the drain-and-prep cost twice.
What replastering costs
Plaster runs $6.50–$9.50 per square foot of interior surface installed. For an average 15 × 30 ft pool at roughly 945 square feet, that is about $6,100–$9,000 of material and labour, plus $2,400–$4,700 of drain, chip-out, refill and start-up.
| Pool size | Interior surface | Typical total |
|---|---|---|
| 10 × 20 ft | ~470 sq ft | $5,000–$8,000 |
| 15 × 30 ft | ~945 sq ft | $8,500–$13,700 |
| 20 × 40 ft | ~1,460 sq ft | $12,700–$20,600 |
| 25 × 45 ft | ~1,895 sq ft | $16,100–$26,200 |
Getting the full service life out of it
More than any other finish, plaster longevity is decided by what happens after the crew leaves.
- Take the start-up period seriously. Daily brushing and controlled chemistry through the first month sets the surface. This single factor separates a plaster finish that lasts twelve years from one that is rough in six.
- Watch the saturation index, not just pH. Water that is even slightly aggressive dissolves calcium out of the finish continuously. Balanced calcium hardness and alkalinity matter as much as pH.
- Do not let acid washing become routine. Each acid wash removes a layer of finish. It is a legitimate occasional remedy and a terrible maintenance habit.
- Brush regularly. Weekly brushing prevents the localized scaling and staining that later needs aggressive chemical treatment.
What this project needs measured
Measurements are only requested when they change the price of the work you selected. Everything below is collected inside the estimator — you can enter dimensions you already know or measure as you go.
Required
Pool interior surface area
Resurfacing and finish work are priced by the square footage of the interior shell.
Only if it applies
Attached spa
An attached spa is a separate surface and is usually quoted as its own line item.
Only if it applies
Pool perimeter (linear feet)
Tile and coping are priced by the linear foot around the pool edge.
Work homeowners commonly add to this project
Combining these while the pool is already drained and staged is usually cheaper than returning for them later. You can add or remove any of them inside the estimator.
- Waterline tile
- Coping
- Structural crack repair
How to read a PoolSavr estimate
- Step 1
Instant estimate
Based on your project selections and general pricing assumptions. Useful for deciding whether a project is realistic.
- Step 2
Measured estimate
Uses your pool, spa, or deck dimensions to price the work against the areas actually being resurfaced, tiled, or replaced.
- Step 3
Contractor proposal
Prepared by a licensed professional after inspecting the site. This is the only number that becomes a contract.
PoolSavr is an estimating and matching platform. We do not perform pool work ourselves — licensed local professionals do. Contractors pay PoolSavr for qualified project leads, which is how the estimating tools stay free for homeowners. A PoolSavr estimate is a planning range, never a guaranteed quote — read thefull estimate disclaimer.
Frequently asked questions
- How much does it cost to replaster a pool?
- For an average 15 × 30 ft pool, roughly $8,500–$13,700 including the drain, chip-out, refill and start-up. Smaller pools start around $5,000 and large pools can exceed $25,000. Tile, coping and structural repair are additional.
- How long does pool plaster last?
- Typically 7–12 years. Water chemistry is the dominant variable — a well-maintained plaster finish regularly outlasts a neglected aggregate one, and consistently aggressive water can ruin plaster in five.
- Is replastering the same as resurfacing?
- Replastering is one type of resurfacing. Resurfacing covers any replacement interior finish, including quartz and pebble; replastering specifically means new white plaster. Contractors use the words loosely, so confirm which material a quote covers.
- Should I choose plaster or pebble?
- Plaster if upfront budget is the constraint, the classic bright-white look matters, or you maintain chemistry closely. Pebble if you are staying long-term, live with hard water, or would rather not manage chemistry attentively — its longer life usually outweighs the higher upfront cost.
- Can plaster be applied over old plaster?
- It should not be, and a bonded overlay is a compromise rather than a proper job. New plaster needs a clean, sound shell to adhere to. Applying over a delaminating layer means the new finish fails with the old one underneath it.
Ready to see what your project costs?
Start with the work you are considering. You will get a preliminary range before anyone asks for your phone number, and you decide whether to request a contractor review at the end.