Fenestration Testing

We offer Testing and Certification for Windows & Doors in compliance with national and international industry-established standards issued by: CSA, AAMA, ASTM, WDMA and NFRC.

Although regulations for fenestration products to be tested and certified have always been in place, they are now enforced in a more consistent manner.  The recent changes in federal, provincial, and municipal building codes aimed to make them more harmonized, have affected the fenestration industry directly.

LabTest Certification provides fast turnaround and competitive pricing for Testing and Certification according to national and international industry-set fenestration standards developed by: CSA, AAMA, ASTM, WDMA, and NFRC.

Thermal Modeling

Thermal Performance Ratings and U-values are now being requested by most municipalities in the form of a temporary label attached to the finished product before installation.

LabTest offers Thermal Modeling and Energy Efficiency evaluation in accordance with CSA A440.2 and NFRC 100 for Energy Performance of Fenestration products, as well as documentation preparation and submittal to National Resources of Canada (NRCan) for Energy Star Program in Canada.

Thermal Modeling includes but is not limited to:

  • Overall coefficient of heat transfer (U-factor)
  • Solar Heat Gain Coefficient (SHGC)
  • Visible Transmittance (VT)
  • Energy Rating
  • Condensation Resistance
  • Air Leakage

NAFS and Thermal Modeling results can be used for simple R&D or Certification.

NAFS Testing

NAFS testing is required to determine the Performance Class (R, LC, CW, AW) and Performance Grade (PG) for fenestration products. A permanent label showing the appropriate ratings must be attached to the finished product before installation.

LabTest offers NAFS Physical Performance evaluation in accordance with AAMA/WDMA/CSA 101/I.S.2/A440 Standards and Specifications.


Testing includes but is not limited to:

  • Operating Force
  • Air Leakage Resistance
  • Water Penetration Resistance
  • Uniform Load Deflection
  • Uniform Load Structural
  • Forced-entry Resistance
  • Stabilizing Arm Load
  • Horizontal Concentrated Load
  • Vertical Concentrated Load
  • Thermoplastic Corner Weld


  • Fixed & sliding windows
  • Casement Windows
  • Hinged/Sliding Doors
  • Skylights & Roof Windows
  • Awning and Hung Windows
  • Tilt & Turn (Dual-action) Windows and Doors
  • Side-lite and Transom
  • Folding Doors
  • And more.

Check our other services

Testing & Certification

Testing & Certification

Product testing and certification to national and international standards in the areas of Electrical, PPE, Hazardous Locations, EMC, Gas, Plumbing, Marine, Solar, Energy Efficiency, Building Materials, Environmental Testing

Field Evaluations

Field Evaluations

Field Evaluations are onsite product approvals designed for limited quantities or specialized equipment where certification is not the fastest or most cost effective option

Management Systems Services

Management Systems Services

LabTest Certification offers Training, Assessment, and Certification in compliance with ISO 9000 series of standards to help you make your business stand out from the competition!

Training Program

Training Program

Our extensive in-house knowledge and high levels of expertise allow us to provide the support you need to achieve complete confidence in the subject area you are seeking training for. Training available online and in-person.