About Keystone Certifications, Inc.
Keystone Certifications, Inc. is an independent, accredited certification body providing product certification and quality assurance verification for the building products industry.
Founded in 1998 as a National Fenestration Rating Council (NFRC) licensed Inspection Agency by former president Marcia Falke, Keystone builds on decades of fenestration testing and certification expertise.
What We Do
We certify products to recognized industry standards, helping manufacturers demonstrate compliance, build trust, and meet regulatory or project requirements.
- NFRC Inspection Agency
- Quality Assurance Entity for Florida DBPR and Miami-Dade County
- Safety Glazing Certification
- Insulating Glass Certification
- Fenestration: NAFS, Impact, CSA A440.2, and HUD certification
- StarGuard energy performance certification
Accreditation, Affiliations, and Memberships
Keystone retains licenses, accreditations, and recognition from major accreditation and government bodies, along with active industry memberships.
Licenses, Accreditations, and Recognitions
Licensed Inspection Agency by the National Fenestration Rating Council (NFRC).
Accreditation by the ANSI National Accreditation Board (ANAB) to ISO/IEC 17020.
Accreditation by the ANSI National Accreditation Board (ANAB) to ISO/IEC 17065.
Accreditation by the Standards Council of Canada (SCC) to ISO/IEC 17065.
EPA Recognized Certification Body for the ENERGY STAR program.
Florida DBPR recognized quality assurance entity.
Memberships and Affiliations
Contributing to standards development as an ASTM member.
Affiliate member of the Efficient Windows Collaborative.
Member of Fenestration Canada.
Member of the National Glass Association.
Industries We Serve
We support manufacturers, fabricators, and suppliers across the building products sector.
Fenestration and Glazing
Certification support for window, door, skylight, glass, and glazing manufacturers.
Broader Building Products
Program coverage for architectural and construction products serving residential, commercial, and government projects.
Our Approach
- Integrity - We operate as an independent third-party certification body to provide objective, impartial evaluations.
- Technical expertise - Our team brings decades of fenestration and glazing experience.
- Responsiveness - We provide clear communication, timely audits, and practical guidance throughout certification.
Why Choose Keystone Certifications
Accredited and recognized across North America
Competitive alternative to other certification bodies
Industry-specific expertise in glazing and fenestration
Streamlined, customer-focused certification process
Frequently Asked Questions
Keystone operates independently as a third-party certification body, and we are accredited by the same major accreditation bodies used by other leading certification organizations.
Manufacturers supplying windows, doors, insulating glass, safety glazing, roofing, and related building products often need certification to meet code, specification, and project requirements.
Fenestration refers to the design and placement of openings in a building, including windows, doors, and skylights.
Keystone is not the manufacturer. We certify product performance and compliance, but product repair and replacement support must come from the original manufacturer. To identify your manufacturer, visit Homeowners Resources.
Keystone offers a public Certified Product Directory that is searchable by certification type, product category, and company.
Keystone provides certification and quality assurance services across multiple programs. For fenestration, Keystone serves as an NFRC-licensed Inspection Agency and offers ANAB- and SCC-accredited certification pathways for U.S. and Canadian markets.
No. Keystone is not a test laboratory. We work with recognized testing and simulation laboratories, and NFRC maintains accredited lab lists for applicable programs.
A permanent label indicates the product is certified. For NFRC, both temporary and permanent labels are required for compliant certified products.
The NFRC CPD is a public online database of certified windows, doors, and skylights, including verified energy performance data. You can learn more at NFRC CPD.