Signs of a bad pool resurfacing job

What to check once a pool resurfacing job is finished: signs the application itself went wrong, versus what a manufacturer already treats as normal wear.

A finished resurfacing job is easy to admire and hard to inspect. The surface looks smooth and the color looks even on the day the crew leaves, and most of what actually went wrong with the application does not show up until weeks or months later. This page is about that gap: what to look for once the pool is filled and running, to tell an ordinary-looking finish from one where something in the application went wrong.

That is a different question from signs your pool needs resurfacing, which is about an old surface reaching the end of its life. Here the surface is new. The question is whether the crew that just finished it did the job right. For the other end of the timeline, what to clear and arrange before the crew's first day, see yard and access prep checklist before pool resurfacing.

Signs worth a closer look

Sign	What it looks like	What to do
Shallow pits or craters	A small sunken spot where a thin layer of finish has come away, rough to the touch right at the spot	Note when it appeared and raise it with the contractor, not just the finish manufacturer
White spotting	Light spots on a dark or white finish, often not visible until about a year after the job	Photograph it and date it, since it often starts appearing about a year after the job
Patchy or blotchy color from day one	Uneven color across the surface rather than one even tone	Ask what caused it before assuming either a defect or normal variation

What the plastering trade calls these

Can Do Plaster Crew, a working plastering contractor, lists spalling, white spotting and discoloration among "some of the most common defects that can happen with a newly plastered pool." That framing matters: these are described as new-plaster problems, not the gradual wear covered on the pre-resurfacing signs page above.

Spalling, sometimes called flaking or pitting, is the most visible of the three. Can Do Plaster Crew defines it plainly: "The term spalling is commonly used to mean shallow surface loss." Arizona Pool Restorations, a pool-service company that repairs it, describes what the spot itself looks like once it happens: "the newly exposed surface (where the flaking occurred) is extremely rough and coarse, while the older existing surface surrounding the missing plaster area is much smoother." On a finish that is only weeks or months old, that contrast, rough at the gouge and smooth everywhere else, is the tell.

White spotting shows up later and is easy to miss until it is established. Can Do Plaster Crew's own words: "Often, these unsightly white spots start appearing a year after the plastering has been done." The same source notes it is "often common in new dark or white-colored plaster pools." Because it can take that long to show, a dated photo from the day the pool was filled is worth having before you need it.

Discoloration right after the fill is a different story, and a more ambiguous one. Can Do Plaster Crew names two separate things under that heading. One is a mix decision: "The discoloration is often caused by the use of excessive calcium chloride set accelerator." How much accelerator goes into the mix is the installer's call, not the material's. The same source adds a second, separate statement about mottled discoloration specifically: "Mottled discoloration can be difficult to remove without damaging the plaster finish." That second sentence does not say what caused the mottling, only that once it is there, fixing it risks the finish itself.

Source: Can Do Plaster Crew, 5 Types of Plastering Defects You Must Identify in New Pool Plaster

What a manufacturer already treats as normal, not a workmanship problem

Not every visible mark on a new finish points at the installer. SGM, a pool-finish manufacturer whose material warranty this site has read in full elsewhere, lists this among what its own warranty does not cover: "Naturally occurring color variation, staining, mottling and hydration." That is one manufacturer's document treating some of the same visual symptoms, mottling among them, as ordinary material behavior rather than a defect.

That is a genuine overlap with the mottled discoloration described above, and it is a real complication, not a contradiction. A finish can be prone to some mottling regardless of who installs it, and a specific patch of mottling can still trace to how the mix was made or applied. The color alone does not tell you which one happened. The useful question for the contractor is not "is this normal," it is "what caused this specific patch, and how would we know."

SGM's document draws one more line worth knowing. It is a materials warranty, and it says so directly: "This limited warranty shall not cover damages due to faulty workmanship." So even where something is a genuine defect, one manufacturer's materials warranty was never going to be the thing that covers it if the cause was how the job was applied. That is a matter between you and whoever did the installation.

A resurfacing job carries two separate warranties in principle: the finish manufacturer's material warranty, and whatever workmanship guarantee a contractor backs their own labor with. This site has not found a reliable source for typical contractor workmanship terms across the industry, so treat that half as a specific question to put to the contractor and get in writing. See pool resurfacing warranty statistics for what SGM's own document says in full, and choosing a pool resurfacing contractor for what else a complete quote should cover.

Source: SGM, Inc., Pool and Spa Finish Warranty Terms, live-verified 2026-09-23

Before you sign off

• Run a hand across the whole surface, not just the shallow end. Texture should feel consistent throughout.
• Check steps, corners and around fittings first. Arizona Pool Restorations notes that spalling is "most commonly found on a step radius, on shallow end floors, and around the main drain," places that are harder to finish evenly than an open wall.
• Compare color in full sun and in shade rather than from one angle. A gradual tone shift that follows the light reads differently from a hard edge between two patches.
• Photograph the whole pool once it is filled and running, and date the photos. That is your comparison point if something changes later.
• If you see something and are not sure which bucket it falls in, ask the contractor to look at it in person rather than diagnosing it from a photo.

Source: Arizona Pool Restorations, Plaster Flaking, Spalling and Delaminations

None of this replaces watching the job itself. For what a properly run application day looks like, start to finish, see what pool plaster day looks like and how to replaster a pool, step by step.