Pool Plaster Repair
Not every crack needs a resurface. Chips, cracks, and hollow spots patched right, or an honest answer when a patch won't hold.
What Plaster Repair includes
Most of the plaster problems we're called about don't need a new surface. A chipped step edge, a hairline crack, a hollow spot that sounds dead when you tap it, or plaster flaking near a return can often be repaired on its own, without paying for a resurface. We inspect first and tell you which one you're looking at: a spot repair, an acid wash, a chemistry problem, or a finish that's genuinely at the end of its life. When a repair is the right call, we cut the failed plaster back to a sound edge and patch it, and we're straight with you about color match, because a patch on older plaster or an aggregate finish rarely disappears completely.
- ✓Surface inspection — tap test for hollow spots, crack mapping, and a check for etching and exposed aggregate
- ✓Chip repair on step edges, benches, and around fittings
- ✓Hairline and surface crack repair
- ✓Delaminated (hollow) plaster cut back to a sound edge and patched
- ✓Small repairs often done underwater, without draining the pool
- ✓Water chemistry checked, so the cause isn't still eating the plaster
- ✓Water-loss check when a crack comes with a dropping water level
- ✓Honest color-match expectations before any work starts
- ✓A written repair-or-resurface recommendation
Pool owners with a chipped step, a hairline crack, a hollow or flaking spot, or a rough patch on plaster that's otherwise sound — and anyone who's been told they need a full resurface and wants a second opinion first.
What to expect: a plaster repair visit
Plaster repair is mostly diagnosis. The patch itself is the small part. Knowing whether the plaster around it is sound, and whether the cause is still active, is what decides if the repair lasts.
- 1Map the damage
We look at the whole surface, not just the spot you called about: chips, cracks, rough or etched areas, stains, and exposed aggregate. A single chip on otherwise smooth plaster is a very different job from a chip in a surface that's worn thin everywhere.
- 2Tap-test for hollow spots
Delaminated plaster sounds dead when you tap it, because it has separated from the shell underneath. We sound out the area around any visible damage, since the hollow section is usually bigger than the flake that fell off.
- 3Rule out the causes a patch won't fix
Low pH and aggressive water etch plaster, and a crack with steady water loss can point to a problem deeper than the surface. We test the water and check the loss rate, so we're not patching over something that will open the repair back up.
- 4Give you the honest call in writing
Spot repair, acid wash, chemistry correction, or resurface. If the finish is near the end of its life, we'll tell you when a repair is money you'd end up spending again next year.
- 5Cut back to sound plaster and patch
Failed plaster is removed back to a firm edge so the patch bonds to something solid, then the repair is applied and finished. Small repairs can often be done underwater, without draining the pool.
- 6Set expectations on color
Fresh patch material rarely matches aged plaster or an aggregate finish exactly, and it can shift as it cures. You hear that before we start, not after.
Plaster Repair — Common Questions
It depends on how much plaster has failed and whether the water has to come down. A few chips or a small patch done underwater is a small job; a large delaminated area may need the pool lowered or drained. We quote it flat-rate after the inspection. For scale, a full plaster resurface runs $7,500–$12,000, so a repair only makes sense when the rest of the surface has years left — and we'll tell you if it doesn't.
Most aren't. Fine cracks in the plaster layer are common, especially as a finish ages, and they're cosmetic unless they're spreading or letting plaster flake off. The one to take seriously is a crack that comes with steady water loss, which can mean it runs deeper than the plaster. That gets a leak check before anyone patches over it, because a patch won't stop water leaving through the shell.
Delamination is the plaster separating from the gunite shell underneath. It shows up as hollow spots that sound dead when you tap them, and as plaster flaking or peeling off, often on steps, benches, and floors. A small area can be cut out and patched. Delamination in several areas usually means the bond has failed more broadly, and chasing it with patches costs more over time than resurfacing.
Often, yes. Small chips, cracks, and patches can be repaired underwater with materials made for it. Larger delaminated areas, or damage in the deep end, may need the water lowered or the pool drained — and in South Florida any drain gets timed to the water table, because an empty shell can float out of the ground.
Close, rarely perfectly. Patch material on aged white plaster, or on an aggregate finish like Diamond Brite or pebble, usually reads slightly different, and the difference can shift as it cures. We tell you what to expect before we start, so a visible patch isn't a surprise.
Repair when the damage is isolated and the rest of the finish is smooth and sound. Resurface when you see etching across the whole surface, delamination in more than one spot, aggregate or rebar showing through, or a finish past its life that you're patching every year. We put that call in writing after the inspection, and if a repair will hold, that's what we recommend.
A crack through the shell is structural, and no plaster patch fixes it. If that's what we find, we document it and have a structural specialist look at it before anything gets patched or resurfaced. Covering a structural crack with fresh plaster just hides it until it opens again.
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