
The Importance of Hiring a Nationally Accredited Field Testing Agency: A Technical Perspective
In the evolving landscape of building envelope performance, field testing is a cornerstone of ensuring durability, performance, and occupant safety. As a building envelope consulting firm accredited as a certified AAMA Field Test Agency by the Fenestration and Glazing Industry Alliance (FGIA) and also approved as a Miami-Dade County Approved Testing Laboratory, GCI understands the critical importance of working with an accredited field testing agency. Whether you are embarking on a new construction project or conducting forensic investigations, partnering with a nationally accredited agency can bring unparalleled advantages.
Why Accreditation Matters
Accreditation is not merely a certification; it is a testament to an organization’s expertise, integrity, and adherence to rigorous standards. FGIA-accredited agencies are required to comply with ISO/IEC 17025 “General Requirements for the Competence of Testing and Calibration Laboratories”, the global benchmark for the competence of testing and calibration laboratories. This standard ensures consistency, reliability, and credibility across all testing activities.
Key Benefits of Accreditation
- Credibility and Consistency: Accredited agencies adhere to strict guidelines, providing consistent and comparable results across projects and locations. This is crucial when stakeholders demand reliable data to inform decisions.
- Enhanced Quality Management System (QMS): Accredited agencies operate under robust QMS frameworks. These systems drive continuous improvement and maintain high service delivery standards through:
- Regular technician training on the latest standards and methods.
- Stringent equipment calibration protocols.
- Comprehensive safety measures for technicians and site personnel.
- Recognition and Expertise: FGIA accreditation signifies recognized expertise in fenestration and glazing industry standards, ensuring that all testing is conducted using industry-approved methodologies.
Technical Aspects of Field Testing
Field testing evaluates the performance of building envelope components, such as windows, doors, and curtain walls, under simulated environmental conditions. Below are the primary testing types offered by accredited agencies:
Air and Water Infiltration Testing

Test chamber on the inside of a sliding glass door for E1105 to recreate wind driven rain conditions.

Calibrated spray rack in action: Simulating wind-driven rainfall conditions for ASTM E1105 testing
This testing determines the resistance of fenestration systems to air and water penetration under pressure differentials. The results ensure compliance with design specifications and highlight potential areas of concern.
- Technical insight: FGIA-accredited agencies conduct tests per standards such as ASTM E1105 “Standard Test Method for Field Determination of Water Penetration of Installed Exterior Windows, Skylights, Doors, and Curtain Walls, by Uniform or Cyclic Static Air Pressure Difference”, utilizing calibrated spray racks and pressure chambers to replicate real-world conditions. Results are meticulously documented, providing a clear assessment of system performance.
- Additional test methods and specifications that FGIA-accredited agencies may be required to follow include:
- AAMA 501.2 “Quality Assurance and Diagnostic Water Leakage Field Check of Installed Storefronts, Curtain Walls and Sloped Glazing Systems”
- AAMA 502 “Specification for Field Testing of Newly Installed Fenestration Products”
- AAMA 503 “Specification for Field Testing of Newly Installed Storefronts, Curtain Walls, and Sloped Glazing Systems”
- ASTM E783 “Standard Test Method for Field Measurement of Air Leakage Through Installed Exterior Windows and Doors”
Forensic Investigations
Forensic field testing identifies the root cause of building envelope failures, such as leaks or condensation. These investigations often involve:
- Non-invasive tools like infrared thermography to locate moisture intrusion.
- Detailed water spray tests to trace leakage paths.
- Technical Insight: Accredited agencies ensure all forensic findings are documented with photographic evidence and detailed reports to assist stakeholders in remediation efforts.
Driving Innovation Beyond Compliance
While accreditation ensures compliance with established standards, it also fosters innovation. Nationally accredited agencies are uniquely positioned to integrate new technologies and methodologies into their practices, advancing the field of building envelope performance.
Emerging Trends
- AI and Machine Learning in Data Analysis: Leveraging AI to analyze test data can enhance the accuracy of predictions regarding system performance over time.
- Digital Reporting and Visualization: Advanced software tools enable 3D visualization of test results, offering stakeholders a more intuitive understanding of performance metrics.
- Enhanced Equipment Capabilities: Continuous investment in state-of-the-art testing equipment, such as high-resolution thermal cameras and automated spray racks, ensures precise and reliable results.

an infrared thermographic image highlighting moisture intrusion behind cladding
Mitigating Risks Through Accreditation
Choosing an accredited field testing agency minimizes risks associated with inconsistent or inaccurate test results, which can lead to costly errors, project delays, or even litigation. For example:
- Accredited agencies maintain meticulous records of all tests, ensuring transparency and traceability.
- Regular audits and proficiency testing validate the agency’s adherence to ISO/IEC 17025 standards.
- Technical Insight: In forensic cases, these records often serve as critical evidence, reinforcing the credibility of expert opinions during litigation.
Considerations for Stakeholders
Building owners, developers, and contractors should prioritize working with accredited field testing agencies for several reasons:
- Cost-Effectiveness: While accredited agencies may have higher upfront costs, their precision and reliability often result in long-term savings by preventing issues before they escalate.
- Regulatory Compliance: Many jurisdictions mandate testing by accredited agencies to ensure adherence to building codes and standards.
- Reputation Management: Partnering with recognized experts enhances the credibility of your project, fostering trust among stakeholders.
Setting Industry Standards
At GCI Consultants, accreditation is more than a requirement; it is a commitment to excellence. By continuously updating our knowledge, investing in advanced technologies, and adhering to rigorous standards, we aim to set benchmarks in the field of building envelope performance.
The Bottom Line
In an industry where precision and reliability are paramount, working with an FGIA-accredited field testing agency is not just a prudent decision – it is an investment in the quality, safety, and longevity of your building projects. By choosing an accredited partner, you are not merely meeting standards but actively shaping them for the future.
Contributing Authors: Stephanie Laing and Dan Johnson, FMPC