Inground Pool Leak Detection & Repair

Inground pool leak detection in Smyrna focuses specifically on gunite, plaster, and vinyl-liner pool construction types that are most common in Cobb County's residential developments. The detection approach for an inground pool differs significantly from an above-ground pool because the shell is structural concrete or vinyl in contact with Georgia's red Piedmont clay, the plumbing runs underground through that clay, and the access to the leak source may require careful excavation in a finished pool deck environment.

Smyrna's inground pool inventory spans roughly four decades of construction, from original gunite pools in the Vinings Smyrna and Belmont Hills areas built in the 1970s and 1980s to newer fiberglass and vinyl-liner pools in the Wynfield and Concord Place developments from the 2000s. Each construction era and type has a characteristic failure pattern driven by the materials, the installation techniques of the period, and the interaction of those materials with Smyrna's specific soil and climate conditions.

Inground Pool Leak Investigation Sequence

We work through a structured investigation sequence designed to identify the leak source precisely before recommending any repair:

• Bucket test confirmation: Confirms that observed water loss exceeds evaporation before beginning the leak investigation proper. See the pool leak detection page for the bucket test methodology.
• Pump-on versus pump-off test: Monitoring water loss with the pump running versus with the pump off for equivalent time periods identifies whether the leak is on the pressure side of the system, the suction side, or in the shell independent of the pump operation.
• Visual shell inspection: We inspect the full shell interior, including the floor, walls, steps, and all fitting penetrations, using a submersible light and dye testing at suspected crack locations. Dye pulled toward a crack confirms an active water loss point at that location.
• Skimmer and fitting inspection: We inspect all skimmer bodies, return jets, main drain covers, and light fixture niches for gasket deterioration, housing cracks, and fitting seal failures using dye testing at each penetration.
• Underground line pressure testing: Each underground line is individually pressure-tested by plugging both ends and monitoring pressure decay. This identifies which specific underground line is leaking without any excavation.

Gunite Pool Shell Repair in Smyrna

Gunite pools in Smyrna that are over 30 years old frequently show cracks from the cumulative effect of Georgia red clay movement, freeze-thaw cycling during occasional hard freezes, and the natural settlement and shrinkage of the shell concrete. Crack repair involves draining the pool to the crack level, routing the crack with a diamond blade to create a consistent repair channel, filling with hydraulic cement or epoxy injection material, and applying a surface coat. For cracks that have been active long enough to erode the surrounding plaster, the repair zone is replastered after the structural repair.

Skimmer body replacements in older Smyrna gunite pools require cutting the existing skimmer from the shell, removing the deteriorated body, and installing a new skimmer with a fresh shell gasket and plaster patch at the perimeter. This is a straightforward repair when the shell concrete around the skimmer is still structurally sound and becomes more complex when the concrete has deteriorated from long-term water contact around a failed gasket.

Underground Pool Line Repair

When underground pool plumbing pressure testing identifies an active line failure, we excavate at the identified leak location, expose the failing joint or pipe section, and repair or replace it. For Smyrna pools where the underground lines run under a concrete deck surface, we discuss access options including deck cutting, trenchless pipe rehabilitation from the pool-side access, and line rerouting around the deck before any concrete is disturbed. The goal is to reach the leak with the minimum necessary surface disruption while providing a durable repair that does not require returning to the same location.

Frequently Asked Questions