Can a pool be replastered without draining it?

Not on any published description of the job. HomeGuide says the pool must be drained and cleaned before the surface is prepped, and prices the drain and clean at $600 to $650.

How long does DIY pool paint last?

HomeGuide publishes 5 to 7 years for pool paint and Angi two to five, with seven the ceiling even for high-quality epoxy on perfect water chemistry. Plaster runs 7 to 12 years on HomeGuide's figures, which is the gap the paint savings are buying.

Do I need a permit to replaster a pool?

It varies by city. HomeGuide's remodel guide lists permits for structural projects but not for resurfacing; your building department sets the local rule. A contractor should know it, and on a DIY job the homeowner has to ask.

What happens if plaster is applied too thin?

SGM's specification is a minimum of 3/8 to 1/2 inch, and its coverage figure assumes that thickness. A coat that falls short of the manufacturer's minimum is outside the warranty it publishes, which is the practical consequence a homeowner can name.

Can I replaster my pool myself?

Published August 21, 2026

The published guides treat replastering as professional work; Angi names epoxy paint as the pool finish a homeowner can apply themselves.

Angi's guidance is the clearest on the question. Epoxy paint is a finishing option you can do yourself or hire a pro for, at $1 to $2 per square foot including labor. Plaster, aggregate, pebble and tile are described as contractor finishes, and HomeGuide's advice on hiring is to choose a company that specializes in resurfacing, with experience on your pool type. Neither guide prices a DIY plaster job, because neither describes one.

Sources: Angi, HomeGuide

What a plaster job has to get right

The manufacturer's specification shows why. SGM, which makes the Diamond Brite quartz finish, specifies a minimum thickness of 3/8 to 1/2 inch, publishes coverage of 22 to 25 square feet per 80-pound bag, and notes that surface roughness changes the coverage. HomeGuide describes the prep that comes first: the old finish chipped, sandblasted, hydro-blasted or chemically stripped, and cracks repaired before anything goes on, because untreated cracks spread into the new surface. Plaster also cures on a clock — HomeGuide says some finishes need 7 to 10 days dry before refilling.

Sources: SGM (Diamond Brite manufacturer), HomeGuide

Plaster is troweled onto a wet shell at a set thickness, over a whole pool, in one continuous pass. The finish you see is the finish you get for a decade.

The finish a homeowner can apply

Paint. HomeGuide's remodel guide prices painting the bottom of a concrete, fiberglass or vinyl pool at $1,400 to $2,500 professionally, using up to 10 gallons, not including draining or repairs. Its resurfacing guide adds the rule that trips DIY painters: the new paint must be compatible with the old, because epoxy and rubberized latex will not adhere to each other. And it prints the trade-off plainly — pool paint lasts only 5 to 7 years before the pool needs resurfacing again, against 7 to 12 for plaster.

Sources: HomeGuide, HomeGuide

Is it difficult to replaster a pool?

HomeGuide prices the labor at $45 to $110 per hour and puts a full resurfacing at 5 to 7 days — for a crew that does it every week. The questions it recommends asking any contractor are a fair self-test for a homeowner: what material suits this pool and why, how long will it take, how soon can it be refilled, and what is the warranty. If those answers are guesses, the job is not a weekend project.

Source: HomeGuide

What is the cheapest way to replaster a pool?

Within the plaster family, standard white plaster is the floor on HomeGuide's table at $6 to $8 per square foot, under quartz at $7 to $10 and pebble at $7 to $15. Below plaster entirely is paint at $1 to $2. HomeGuide's one cost-saving line that does not change the finish is timing: have repairs done before resurfacing rather than after, and compare at least three estimates for the same finishing material.

Source: HomeGuide

For the full plaster price picture, finish by finish: what it costs to replaster a pool.

If the honest answer is to hire it out, these are the pool replastering companies AI assistants actually name when homeowners ask. Nobody can pay to be on these lists.

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Questions people ask next

Can a pool be replastered without draining it?: Not on any published description of the job. HomeGuide says the pool must be drained and cleaned before the surface is prepped, and prices the drain and clean at $600 to $650.
How long does DIY pool paint last?: HomeGuide publishes 5 to 7 years for pool paint and Angi two to five, with seven the ceiling even for high-quality epoxy on perfect water chemistry. Plaster runs 7 to 12 years on HomeGuide's figures, which is the gap the paint savings are buying.
Do I need a permit to replaster a pool?: It varies by city. HomeGuide's remodel guide lists permits for structural projects but not for resurfacing; your building department sets the local rule. A contractor should know it, and on a DIY job the homeowner has to ask.
What happens if plaster is applied too thin?: SGM's specification is a minimum of 3/8 to 1/2 inch, and its coverage figure assumes that thickness. A coat that falls short of the manufacturer's minimum is outside the warranty it publishes, which is the practical consequence a homeowner can name.

Written for homeowners by Most Recommended Pool Resurfacing, which measures which pool resurfacing companies AI assistants actually recommend in 12 U.S. metros. Nobody can pay to be on those lists. How we measure.