QC/QA Coatings inspection services

Quality Control is the task‑level process of inspecting, measuring, and documenting coating work to verify that each step meets project specifications and applicable industry standards.

QC focuses on detecting nonconformances during surface preparation, environmental conditions, material handling, mixing, and coating application. Inspectors use calibrated instruments, established test methods, and defined hold points to confirm that the work is performed correctly and that the coating system is applied within the manufacturers and specification requirements.

Quality Control (QC) Inspections

Ensuring every step meets specification requirements

• Verification of surface preparation and cleanliness

• Environmental monitoring (temperature, humidity, dew point)

• Abrasive cleanliness and surface profile measurement

• Material handling, mixing, and batch verification

• Wet film thickness checks and application monitoring

• Documentation of all inspection checkpoints

Quality Assurance is the program‑level system of policies, procedures, training, and oversight that ensures a contractor has the capability and controls in place to consistently meet quality requirements.

QA focuses on preventing defects by evaluating contractor procedures, personnel qualifications, submittals, documentation practices, and compliance with governing standards. It ensures that the QC process is properly implemented and that the overall quality program supports specification conformance and long‑term coating performance.

Quality Assurance (QA) Oversight

Program‑level evaluation for long‑term coating performance

• Review of contractor procedures and work practices

• Verification of personnel qualifications and certifications

• Submittal and documentation compliance

• Evaluation of QC processes and reporting accuracy

• Performance of parallel coating inspections to validate contractor QC results

• Alignment with project specifications and industry standards

In some cases, asset owners, general contractors or subcontractor adds QC/QA personnel to a coatings project without establishing clear or agreed‑upon inspection criteria. This is where SpecTenn LLC excels. We understand what is required to protect the asset while operating within the agreed contractual framework, and we adjust our inspection approach to meet those expectations. Regardless of the level of coatings inspection required, we maintain a precise understanding of our responsibilities and the role we serve within the project we’ve been entrusted to support.

Pre‑job and pre‑surface preparation inspections

This includes reviewing project specifications, confirming the required coating system, assessing existing surface conditions, identifying defects or repairs, verifying environmental controls, and ensuring all inspection instruments are properly calibrated before work begins.

Environmental condition monitoring

Inspectors document ambient temperature, surface temperature, relative humidity, dew point, and airflow or ventilation conditions to ensure they fall within manufacturer and specification limits throughout the coating process.

Surface preparation inspections

This step verifies that the substrate meets the required SSPC‑SP cleanliness level, confirms abrasive cleanliness and type, measures surface profile, checks dust levels, performs soluble salt testing when required, and ensures welds and substrate defects are properly corrected.

Pre‑application material verification

Inspectors confirm coating batch numbers, expiration dates, storage conditions, mixing procedures, induction times, thinning practices, and equipment setup to ensure materials are prepared and handled according to manufacturer and specification requirements.

Application monitoring

This includes measuring wet film thickness, observing application technique and coverage, verifying stripe coats, monitoring recoat windows and cure times, and identifying defects such as runs, sags, overspray, or improper coverage during application.

Dry film thickness inspection

Inspectors take the required number of DFT readings, verify thickness per coat, confirm total system thickness, and identify areas of low or excessive build to ensure compliance with specification tolerances. 

Coating system integrity testing

Depending on project requirements, this may include holiday/continuity testing, adhesion testing, cure verification, and gloss or color measurement to confirm the coating system meets performance and specification criteria. 

Nonconformance identification and corrective actions

Any deviations from specifications are documented, mapped, and communicated. Inspectors record contractor corrective actions and perform re‑inspection to verify compliance before work proceeds.

Final inspection and acceptance

This final step confirms full system compliance, ensures all required tests are complete, verifies punch list resolution, and compiles final documentation with inspector certification for project closeout.