Complete Guide to Swimming Pool Construction Defects (For Attorneys & Adjusters)

Swimming pool construction defect cases are uniquely complex. Unlike typical residential construction disputes, pools involve structural engineering, hydraulics, electrical safety, soil science and strict permitting requirements.

Some installations are not capable of withstanding external ground pressures, hydrostatic pressure, improper backfilling and base support, pools not being level. Other issues include:

• Water level is inconsistent with the pool edge
• Coping stone base mortar is an inconsistent thicknesses
• Uneven water level
• Ground water issues
• Deck sloping toward the pool
• Improper or absence of bonding
• Unlevel pool structure
• Improper installation of pool support equipment
• Improper placement of electrical devices
• Using the wrong plumbing material not approved for intended purpose

One-piece fiberglass pools are the only pool structures that are manufactured in a controlled environment off site in a manufacturing plant. Many cases come our way because the pool and equipment have not been bonded properly, inspected by city electrical inspectors or had approved installations.

Installation site conditions vary and the builder needs to make onsite decisions to ensure the pool structure is installed correctly, will stand the test of time, such as is a ground water control system in place for use after the pool is installed, is properly bonded and more.

When something goes wrong, the consequences can range from cosmetic frustration to catastrophic failure, and the legal exposure can be significant.

This guide is designed for attorneys handling pool‑related litigation and insurance claims adjusters evaluating defect or damage claims. If your case involves a pool that “just isn’t right,” this resource will help you understand the defect categories, the red flags and the role of a swimming pool litigation expert’s evaluation.

What Qualifies as a Swimming Pool Construction Defect?

A swimming pool construction defect is fundamentally a failure to deliver what was promised, contracted or required by code.

Defects fall along a spectrum:

• Minor cosmetic issues: plaster mottling, small tile imperfections
• Functional defects: poor circulation, leaks, equipment failures
• Major structural or safety failures: shell movement, electrical hazards, drainage problems

A pool may look acceptable while hiding serious underlying issues. Many defects are invisible to the untrained eye until damage becomes severe, which is why expert evaluation is essential.

Structural & Installation Defects

Structural issues are among the most litigated pool defects because they often lead to expensive repairs and long‑term damage.

Pool Shell Not Level

A shell that is out of level can cause:

• Deck drainage to flow into the pool instead of away
• Accelerated surface deterioration
• Waterline tile inconsistencies
• Premature equipment wear
• Circulation equipment failure.
• Poor water flow.

These are oftentimes critical defects.

Improper Excavation, Backfill or Soil Preparation

Common problems include:

• Over‑excavation or under‑excavation
• Uncompacted or improperly compacted backfill
• Failure to account for expansive soils
• In adequate ground water control methods in place.

These issues can lead to shell movement, cracking, and deck heaving.

Gunite/Shotcrete Application Defects (Concrete Pools)

Defects may include:

• Rebound material left in place
• Insufficient compressive strength
• Improper curing
• Cold joints.
• Voids or weak spots

These conditions compromise structural integrity and often require destructive testing to confirm.

Fiberglass Shell Distortion or Improper Setting

Fiberglass pools are vulnerable to:

• Bulging or warping
• Cracking
• Floating due to groundwater pressure
• Improper leveling during installation
• Backfill that does not support the shell

These defects can render the pool unsafe or unusable.

Electrical & Bonding Defects

Electrical safety is one of the most misunderstood – and most dangerous – areas of pool construction.

Bonding connects all metal components and conductive surfaces to create an equipotential grid. This prevents voltage differences that can cause electrical shock or electrocution.

An unbonded or poorly bonded pool can expose swimmers to:

• Tingling sensations
• Muscle paralysis
• Fatal shock

These cases carry significant liability for contractors and can dramatically affect insurance exposure.

When trying to identify missing inspections or approvals, red flags include:

• Absence of a permit.
• No electrical inspection sticker
• Missing permit documentation
• Inconsistent equipment pad wiring
• Bonding wire not visible at equipment or shell

Lack of inspection may be both a construction defect and a safety violation.

Plumbing & Hydraulic Defects

Hydraulic design is essential for water quality, equipment longevity and code compliance.

Common defects include:

• Leaks from poor glue joints or improper pipe bedding
• Improper pipe sizing leading to low flow or cavitation
• Inadequate circulation causing algae, cloudy water, or heater failure
• Equipment installation errors, such as pumps installed above water level without check valves
• Using a circulation pipe not approved for underground use.

These issues often require pressure testing and flow analysis to diagnose.

Deck & Drainage Defects

Deck failures often stem from improper grading or expansion joint installation.

Decks must slope away from the pool. When they don’t:

• Water flows into the pool
• Soil saturation behind the wall is likely
• Shell movement accelerates

Common causes of expansion joint failures, cracking and heaving include:

• Missing or improperly installed expansion joints
• Soil movement
• Poor concrete mix or curing

These defects often appear within the first year, but sometimes don’t appear until sometime later.

Permit & Inspection Deficiencies

Many pool disputes trace back to missing or incomplete documentation.

Unpermitted work can invalidate warranties, violate local codes and complicate insurance coverage.

If inspections were skipped, only partially completed or were failed but not corrected, the contractor may be liable for resulting defects.

This has a potential impact on claims and litigation. Missing documentation can:

• Shift burden of proof
• Support negligence claims
• Strengthen breach‑of‑contract arguments
• Affect coverage determinations

The “Something Doesn’t Seem Right” Cases

Clients often sense that something is wrong with their pool long before they can explain it.

Examples include:

• Waterline always uneven
• Deck cracking early
• Equipment running loudly
• Circulation pump noisy or not operating properly
• Persistent cloudy water
• “The pool just doesn’t look right”

The most effective approach is to validate their concern and guide them toward a structured evaluation. Encourage them to document what they’re seeing. For example: uneven waterlines, unusual noises, recurring maintenance issues or changes in the deck or surrounding soil.

These observations, even if vague, help establish a baseline.

How Pool Expert Witness Services Support Attorneys & Adjusters

A qualified pool expert provides both technical insight and litigation support, including:

• Site inspection and photographic documentation
• Review of contracts, plans, permits, and change orders
• Pressure testing, electrical evaluation and level surveys
• Determination of cause and scope of damage

Written expert reports should include:

• History and timeline of events
• Clear explanation of defects
• Code and industry standard references
• Pool construction defect analysis
• Repair recommendations and cost implications
• Deposition and Trial Testimony
• In addition to the report itself experts should be able to offer suggested questions for attorneys to use in depositions

Experts must be able to:

• Explain complex technical issues in plain language
• Withstand cross‑examination
• Support opinions with evidence and standards
• Have a clear history of providing results

Lakeside Consulting works with legal and insurance professionals by providing:

• Objective, defensible expert evaluations
• Rapid response for urgent cases
• Comprehensive reporting
• Litigation‑ready documentation
• Support through mediation, deposition and trial

How to Engage a Pool Expert Early (and Why It Matters)

Early expert involvement can dramatically influence case outcomes.

The benefits of early engagement include:

• Preserves evidence before repairs or alterations occur
• Shapes discovery strategy by identifying key issues
• Supporting or defeating summary judgment with technical clarity
• Reduces claim ambiguity for adjusters
• Prevents spoliation disputes

Early expert input often saves time, reduces costs and strengthens case positioning.

Conclusion

Swimming pool construction defect cases require specialized knowledge across multiple disciplines: structural engineering, electrical safety, hydraulics and code compliance.

For attorneys and adjusters, understanding the categories of defects is the first step. The next step is partnering with a qualified expert who can evaluate the pool, provide an expert pool damage analysis and offer defensible opinions.

Beware of reports from competitive builders or individuals lacking construction background specific to the case matter. The best experts are non-biased experienced professionals.

Lakeside Consulting has extensive experience with one piece fiberglass failures and brings decades of experience in pool and aquatic design. Contact us to discuss the details of your case to receive expert advice today.