Programs for the Fenestration Industry
Keystone's third party inspection and certification programs enable window, door, and skylight manufacturers to demonstrate compliance with the requirements of building codes, the ENERGY STAR® Windows Program and other utility/tax rebate programs.
NFRC Window and Door Certification
Keystone is a National Fenestration Rating Council (NFRC)
licensed Inspection Agency (IA) that offers window and door certification services. The NFRC Certification Program offers fenestration (window and door) manufacturers a third party verified,
nationally-recognized method for demonstrating product U Factor, Solar Heat
Gain Coefficient (SHGC) and other energy performance characteristics.Keystone Window and Door Certification
The Keystone Structural and Impact Performance Certification
Program is accredited by the American National Standards Institute (ANSI), and offers fenestration product manufacturers a third party verified, nationally-recognized method for demonstrating product design pressure and resistance to flying debris resulting from hurricanes.Keystone Insulating Glass Certification Program
Keystone's Insulating Glass Certification Program is an ANSI-accredited third party quality assurance program specific to the insulating glass (IG) fabrication aspect of the fenestration product. The
implementation of IG program requirements will lead to improved seal durability and longevity of IG units.Keystone Quality Assurance Program
The Keystone Quality Assurance Program is accredited by the International Accreditation Service (IAS), is officially recognized by the Florida State Building Commission for demonstrating compliance with the third-party quality assurance requirements of the Florida State Product Approval Rule 9N-3 and ICC Evaluation Reports.