Quartz cost: what the aggregate finish runs

Quartz pool finish costs $6,000 to $12,000 installed for a typical residential pool. That is $2,000 above white plaster at both ends of the range, and it buys a harder surface with a 10 to 15 year life instead of 7 to 12. On an 855 square foot pool the rate works out to $7.02 to $14.04 per square foot, and the number that decides whether the upgrade pays is cost per year.

What the price buys

Quartz aggregate is a cementitious finish in which crushed quartz replaces much of the marble dust in a plaster mix. The quartz is silica, hardness 7 on the Mohs scale, against calcite at 3. The troweled surface exposes those grains, so aggressive water has less soft material to dissolve.

That is the whole product. It is still cement-based, still cures for 28 days, and still depends on water chemistry. What changes is how fast it wears and how much staining it shows.

The per-square-foot arithmetic

Start with interior surface area, not footprint. A 15 by 30 foot pool has 450 square feet of floor and a 90 foot perimeter. At 4.5 feet average depth, wall area is 90 × 4.5 = 405 square feet, so the interior is 450 + 405 = 855 square feet.

• Low end: $6,000 ÷ 855 = $7.02 per square foot
• High end: $12,000 ÷ 855 = $14.04 per square foot

On a smaller 500 square foot pool, the same totals become $12.00 and $24.00 per square foot, because mobilization and setup are fixed. Pool resurfacing cost per square foot covers how shape and depth change the area.

Why the range is wide

Two quotes for the same pool can differ by $4,000, and the finish is rarely the reason.

• Removal method. A full chip-out adds $1,500 to $4,000 over bonding a new coat onto the old surface.
• Shell repair. Cracks, hollow areas, and rusted rebar are priced after stripping, not before.
• Aggregate grade. Fine quartz costs less than coarse, and more aggregate by weight costs more.
• Access. Spoil has to leave the yard. No vehicle access means carrying it.
• Extras. Tile at $1,500 to $5,000, coping, drains, and lights are separate.
• Season. Spring is booked, and curing in cold weather has constraints.

The lower quote is often a smaller scope rather than a better price. Quartz installation explains what the preparation stages actually involve.

Quartz against the other finishes

Quartz is the middle row on every axis, which is why it wins most comparisons. It costs less than pebble, lasts longer than plaster, and does not need the specialist wash-back that pebble does.

Cost per year, worked through

The arithmetic is plain division. Quartz at the best case is $6,000 ÷ 15 = $400 per year. At the worst case it is $12,000 ÷ 10 = $1,200 per year. Plaster runs $333 to $1,429 on the same method.

That overlap is the honest answer to whether quartz is cheaper over time. It is not reliably cheaper per year; it is cheaper at the middle and top of the price range and roughly equal at the bottom. What it does reliably is push the next resurface three years further out, and three years without draining the pool has a value the table cannot show.

A worked comparison on one pool: 855 square feet, plaster at $6,500 over 9 years is $722 per year. Quartz at $8,500 over 13 years is $654 per year. The quartz job costs $2,000 more and returns $68 a year, which is not a reason on its own — the harder surface and the later disruption are.

What a quote should state

1. Interior surface area in square feet, written on the quote.
2. Removal method: full chip-out, sandblast, or bond coat.
3. Repairs included, plus the unit rate for anything found after stripping.
4. Aggregate brand, grade, and the ratio of aggregate to cement.
5. Startup plan: brushing schedule, chemistry targets, and when the heater can run.
6. Whether drain-down, refill, tile, and coping are inside the total.

A quote missing the first two items cannot be compared with anything. The rest are how you find out whether the number at the bottom is a price or a deposit on a bigger one.

When quartz is the right buy

Quartz pays on pools kept past eight years, pools on salt chlorinators, pools in full sun with heavy bather load, and pools where the owner wants a color that white plaster cannot hold. It does not pay on a pool being sold in three years, or on a shell that needs structural work the finish cannot fix.

The direct comparison is in quartz vs plaster, and the failure modes to watch for afterward are in quartz problems. If the budget stretches to pebble, the per-year arithmetic is close enough that the decision comes down to surface feel rather than money.

The short version

Quartz costs $6,000 to $12,000 installed, or $7.02 to $14.04 per square foot on an 855 square foot pool, and runs $400 to $1,200 per year across its 10 to 15 year life. It costs $2,000 more than plaster at both ends and lasts about three years longer, which is a fair trade on a long hold and a waste on a short one. Plaster cost covers the cheaper option, and quartz vs plaster settles the head-to-head.