Pool Shell Crack Leak Detection in Coachella, CA
When plumbing tests come back clean, the pool structure is next. We look for cracks, hollow spots and failed joints in the shell itself.
Serving Coachella, CA and selected nearby communities.
Suspect a pool leak?
Tell us what you are seeing and we will help you work out where your pool is losing water.
(760) 388-1718
Overview
Telling a crack from a leak
The shell is the concrete, plaster or fiberglass structure that holds the water. Some cracks are hairline surface marks that never leak. Others pass water. Telling the two apart is the whole point.
We usually test the shell after ruling out plumbing, because a crack you can see from above is not always the one that is leaking.
Tile lines, the bond beam, steps, and the places where the shell meets fittings are all worth checking.
Signs of a shell crack leak
- Visible crack in plaster, tile or coping
- Water loss that stops at a steady level, often near a crack or tile line
- Hollow-sounding or loose plaster or tile
- Wet ground or a soggy patch beside the pool wall
- A stain trail on the pool surface
How we test
How we test the shell
We rule out plumbing first, so the shell is not blamed for a pipe problem.
Rule out plumbing
We check the equipment, fittings and lines first, so we know the loss is coming from the structure.
Dye test the cracks
With the pool still, we apply dye near cracks and joints and watch whether it is drawn into them.
Inspect below the waterline
We check walls and floor with a mask, tap for hollow spots, and use listening equipment where it helps.
Our process
Equipment and how long it takes
We use dye, underwater inspection with a mask, tapping tools and electronic listening equipment. A shell inspection typically takes about one and a half to three hours, depending on the size of the pool and the number of suspect areas.
We locate leaks; we do not perform the repair itself. An accurate location helps whoever you hire keep any digging small and targeted.
What you will know when we finish
- Whether the shell is leaking or the loss is coming from elsewhere
- Where the affected cracks or joints are
- Which cracks are cosmetic and which are passing water
- What further steps make sense
Good to know
Why a proper diagnosis matters before shell work
Shell work is one of the larger costs a pool owner can face, so it pays to confirm the shell is the problem before anything is opened up. A common outcome of testing is that a visible crack turns out to be cosmetic and the real leak is elsewhere, in a fitting or a buried line. The reverse also happens: a pool with clear plumbing can have a cracked shell that only shows up under dye. Knowing which is true, and exactly where, is what lets you decide on next steps with confidence, whatever you choose to do about it. Because plumbing leaks can look like shell leaks, we test the return lines, suction lines and skimmer first.
Local conditions
Earthquake country and temperature swings
The Coachella Valley sits in an active earthquake region, and seismic movement, sharp desert temperature swings and sandy soil can all stress a pool shell. Many cracks are only cosmetic, but movement is one reason shells crack, so a clear diagnosis is worth having before any work begins.
Questions
Shell crack questions
Is every crack a leak?
No. Many hairline cracks are cosmetic. Dye testing shows whether a crack is actually passing water.
Do you need to drain the pool?
No. Testing is done with the pool full. Draining a pool without professional guidance can risk damage to the shell, so we advise against draining it for testing.
Can a crack below the waterline be found?
Yes, with dye and underwater inspection.
What if the plumbing is leaking as well?
That is common enough that we test the plumbing first and only then conclude the shell is at fault.
Related
Related services
Areas we serve
Need pool leak detection?
Ready to check your pool shell?
Call us to book a leak detection visit.