Every concrete pool needs resurfacing eventually — the interior finish is a wear item, not a permanent part of the structure. The question is which finish to buy, because the spread between the cheapest and the most durable option is roughly three times the cost and four times the lifespan, and the cheap option is not always the wrong one. This guide covers 2026 pricing per finish type, how to tell your pool is due, what a complete quote includes, and where the real value sits.
For an average 500 square foot interior surface — roughly a 16 by 32 foot pool — standard white plaster resurfacing runs $5,500 to $9,000, or about $11 to $18 per square foot. Quartz-aggregate finishes, which mix ground quartz into the plaster for better stain resistance and color depth, run $8,000 to $13,000 at roughly $16 to $26 per square foot.
Pebble finishes such as exposed pebble aggregate cost $11,000 to $18,000, about $22 to $36 per square foot, and are the current default for owners planning to stay in the home. All-tile interiors are the premium option at $25,000 to $60,000 or more, $50 to $120 per square foot, and are typically chosen for glass-tile aesthetics rather than economics. Fiberglass pools are refinished with gelcoat at $6,000 to $12,000, and vinyl liner replacement is a different job entirely at $4,000 to $8,000.
Plaster fails progressively and the early signs are cosmetic. Rough or chalky surfaces that scratch feet, persistent gray or brown staining that acid washing no longer removes, and visible aggregate showing through are all mid-life indicators. At that stage you can often buy two or three more years with a chemical treatment or a light acid wash at $400 to $900, though every acid wash removes a layer of plaster and there are only so many available.
The signs that mean act now are structural: spalling where chunks of plaster flake away, hollow-sounding areas that indicate the finish has delaminated from the shell underneath, exposed gunite or rebar, and a persistent water loss of more than a quarter inch a day after ruling out evaporation. Exposed rebar in particular is urgent — once water reaches the steel it rusts, expands, and cracks the shell, converting a $9,000 resurfacing into $20,000 of structural repair.
A proper resurfacing is not just new plaster. The scope should include draining the pool, chipping out the old finish (hydro-demolition or manual chipping), prepping and bond-coating the shell, patching any structural cracks, replacing or resetting the waterline tile, replacing main drain covers to current VGB safety standards, applying the new finish, acid-washing and refilling, and a full startup chemical regimen over the first 28 days.
Common separate line items to ask about explicitly: new waterline tile ($1,500 to $5,000), replacing skimmer throats and returns ($400 to $1,200), coping repair or replacement ($3,000 to $8,000), and the water itself, which for a 20,000 gallon fill can be $200 to $600 depending on whether you use municipal water or a delivery truck. Also confirm who is responsible for the startup brushing schedule, because new plaster needs daily brushing for the first two weeks and skipping it causes permanent mottling.
White plaster is the right choice if you are selling within a few years, if budget is tight, or if you want the classic light-blue water look at the lowest cost. Accept that you are buying 7 to 12 years, less if your water chemistry is not carefully maintained. Quartz is the value pick for most owners: for about 45 percent more money you get roughly 50 percent more life and materially better stain resistance.
Pebble is worth the premium if you plan to stay 15 years or more, since the cost per year of service is actually the lowest of the three. Its downsides are real though — the texture is rougher underfoot, which matters if kids play on the steps, and mini-pebble or polished-pebble variants that solve that add 15 to 25 percent. Tile is an aesthetic decision; nobody chooses it on a spreadsheet.
Finish lifespan is driven more by water chemistry than by product quality. Keep pH between 7.4 and 7.6, total alkalinity at 80 to 120 ppm, and calcium hardness at 200 to 400 ppm. Water that is chemically aggressive — low pH, low calcium — literally dissolves calcium out of the plaster, etching and roughening it. Water that is oversaturated deposits scale. Both shorten life by years.
The 28-day startup after resurfacing matters disproportionately. Follow whatever startup procedure your installer specifies, brush daily for the first two weeks, keep the pump running continuously for the first few days, and do not add salt to a saltwater system for at least 30 days. Most premature plaster complaints trace back to a startup that was rushed, not to defective material.
For an average 500 square foot pool interior, white plaster runs $5,500 to $9,000, quartz aggregate $8,000 to $13,000, and pebble $11,000 to $18,000. All-tile interiors start around $25,000. Add-ons like waterline tile replacement, coping repair, and new skimmer throats are commonly quoted separately, so confirm the full scope in writing.
White plaster lasts 7 to 12 years, quartz 12 to 18, and pebble 15 to 25. Water chemistry drives that range more than any other factor — consistently aggressive water can cut a plaster finish's life nearly in half. Fiberglass pools need gelcoat refinishing about every 15 to 25 years, and vinyl liners are replaced every 8 to 12.
Typically 5 to 10 working days from drain to refill, weather permitting. Chipping out the old finish takes one to two days, prep and repairs another one to two, application is usually a single day, and then acid washing and refilling. Plan on another 28 days of careful startup chemistry and daily brushing before the pool is fully back to normal.
If you are staying in the home 15 years or more, yes — pebble costs roughly double but lasts about twice as long and hides staining far better, so the annual cost of ownership is similar or lower. If you plan to sell within five years, standard plaster or quartz gives a buyer the same visual appeal for thousands less.
Realistically no. Plaster application is a timed trade skill — the material sets on a schedule and a crew of three to five works continuously to keep a wet edge across the whole shell. A DIY attempt typically produces trowel lines, cold joints, and delamination within a season, and then you pay for a professional job anyway on top of demolition of your own work.
Once plaster spalls through to the gunite, pool water reaches the reinforcing steel. The rebar rusts, expands, and cracks the shell from the inside, turning a $9,000 resurfacing project into $20,000 or more of structural repair. Exposed rebar, hollow-sounding delaminated areas, and water loss over a quarter inch a day all mean schedule the work now.