Some of the most expensive pool repairs begin with a symptom that looks small. Matt's advice is to diagnose first and price second—because a stain, crack, leak or loose coping can be the visible part of a larger condition.
1. “I’ll just drain it and pressure wash the stains.”
That can work for some surface contamination, but older or deep stains may be embedded in the finish. Depending on the material and condition, a contractor may try polishing, an appropriate stain treatment such as a Jack's Magic product, acid treatment or pressure cleaning. If too little sound finish remains—or the stain is deep—resurfacing may be the durable answer.
2. A crack that turns out to be structural
A finish crack can be relatively contained. A structural shell crack can require opening the area, determining why movement occurred, repairing the shell and addressing soil support or voids before refinishing. Read the structural crack guide.
3. The waterline is no longer level
On many pools with six-inch waterline tile, the normal water level visually sits around the middle of the tile. If one end reads noticeably different from the other, Matt treats that as a possible movement clue—not a diagnosis. Correcting a shifted pool can involve tile, coping, void filling, structural repair, leveling work and resurfacing.
4. Fiberglass splinters or failing gel coat over a gunite pool
When an older gunite shell has been coated with fiberglass, a failing gel coat can expose fiberglass that is uncomfortable or unsafe to touch. The bigger question is why fiberglass was used originally and whether the fiberglass itself is still securely bonded. Removing it can expose underlying cracks or prior repairs. Applying another finish over an unsound fiberglass layer can fail as the old layer releases.
5. “It’s probably just a small leak.”
Texas pools can lose substantial water to evaporation in peak summer. Matt commonly sees around a half-inch per day in very hot, full-sun conditions, but evaporation varies with wind, humidity, temperature, pool features and exposure. If a pool is losing materially more than its normal pattern, leak detection and plumbing pressure testing may be needed. A leak in the shell or buried plumbing can turn into a larger repair.
6. Freeze damage behind an elevated spa wall
Water appearing at the face of an elevated spa can be the endpoint of damage hidden inside the wall. Matt is currently evaluating a project where freeze damage is suspected in concealed plumbing. Small jet lines can limit pipe-relining options, which can mean opening the wall to access the plumbing.
7. Coping that was never properly protected
Porous stone and grout can absorb moisture. Matt has seen freeze conditions contribute to widespread coping failure after moisture entered unsealed materials. The repair was not a spot fix—the coping had to be removed and replaced.
8. Chemistry or plumbing layout damages expensive equipment
Pool heaters commonly use metal heat exchangers that can be damaged by aggressive water chemistry. Matt also watches equipment layout: concentrated chlorinated water should not be routed in a way that exposes a heater to unnecessarily harsh conditions. Pumps can also be damaged by running dry.
These are examples from Matt's field experience, not remote diagnoses. Similar symptoms can have different causes. The point is to investigate before assuming the cheapest explanation—or the most expensive one.
Have a pool you want Matt to look at?
Tell us what you are seeing, what you want to change and where the pool is located. Aqua Pool Finishes serves East Texas and North Texas/DFW for resurfacing, renovation and specialty repair projects.
Request an Estimate