Understanding Fenestration Systems – Design, Performance, And Testing

Windows, doors, skylights, and other exterior openings like hung windows, folding doors, and tilt-turn systems collectively comprise the fenestration systems in a building’s design. These components, including casement windows, hinged doors, awning windows, and more, enhance aesthetics, allow natural light and fresh air to enter, and critically contribute to energy efficiency and durability. At LabTest, we are proud to show our expertise in fenestration systems and provide a quality assurance process that is prompt, competitively priced, and compliant with the requirements set by established authorities.
This article explores the standards established by five prominent organizations: CSA, AAMA, ASTM, WDMA, and NFRC. These groups set up complex testing standards for fenestration products to ensure high quality and consistency. The standards outline the testing parameters, such as heat transfer and solar heat gain. We’ll also discuss recent modifications in building codes that have resulted in more harmonized regulations. Furthermore, we’ll review NAFS testing, which determines the Performance Class and Grade of a fenestration system. These standards are critical to understanding design and performance.

Fenestration - Windows

Key Takeaways

  • Recent changes in federal, provincial, and municipal building codes have resulted in more harmonized and consistently enforced regulations for fenestration products.
  • We provide rapid and competitively priced Testing and Certification, adhering to national and international fenestration standards established by industry authorities such as CSA, AAMA, ASTM, WDMA, and NFRC.
  • Fenestration testing involves a variety of evaluations, including Operating Force, Air Leakage Resistance, Water Penetration Resistance, Uniform Load Deflection, and Uniform Load Structural.

Fenestration Regulations


It’s critical to stay up-to-date with recent changes in building codes. They’re making fenestration regulations more consistent and aligning them with standards set by those mentioned above five big players.
These updates integrate fenestration codes into building regulations, ensuring quality control across the industry. It’s all about adhering to industry standards and meeting compliance requirements.
So whether you’re installing casement windows or sliding doors, you need to be up-to-date with these guidelines. Thermal performance ratings and U-values are now required by most municipalities; another step towards raising the bar in energy efficiency. For example, in BC where two of our offices are, the BC Energy Step Code aims to make all new buildings “net energy ready” by 2032.

Testing and Certification

When it comes to making sure your windows, doors, and skylights are up to code, we offer certification that adheres to industry standards set by established authorities.

You can rest assured knowing we’re committed to the following:

  • Rigorous testing procedures for quality assurance;
  • A thorough certification process ensuring product compliance;
  • Strict adherence to industry standards.

We proudly operate under a freedom-embracing ethos that respects your need for swift results while upholding the quality you’d expect. With us, you get expert services like Thermal Modeling and NAFS Physical Performance evaluation, among many, many others. Your products will bear the testament of meeting stringent regulations even before installation; giving you solid peace of mind!

City Buildings and Windows

Thermal Performance Ratings

Imagine you’re a chef, and your recipe calls for precise temperature settings; too hot or cold could ruin the dish. Well, that’s where Thermal Performance Ratings come in handy for windows and doors. It’s like the ideal temperature setting on an oven; getting it right ensures energy efficiency and comfort inside your home or building.

To help with this, we provide Thermal Modeling services that adhere to CSA A440.2 and NFRC 100 standards. These building fixture standards ensure the best performance of each product. Temporary labels are attached to the windows, doors, and skylights before installation, making it easy to choose what best suits your needs while ensuring energy efficiency.

Thermal Modeling Parameters

In energy efficiency and building comfort, thermal modelling parameters are the key ingredients that ensure your windows and doors are “cooking” just right. These parameters, like the U-factor, measure how well fenestration systems prevent heat from escaping. A lower U-factor means better insulation and higher energy efficiency.

Our team provides comprehensive documentation preparation for these parameters as part of our offerings. We also submit these documents to NRCan for the Energy Star Program inclusion in Canada, taking a load off your shoulders.
Ultimately, we aim to make it easy by adhering to these standards and making the process more seamless.

NAFS Physical Performance

Our NAFS Physical Performance evaluation services leave no stone unturned when determining your product’s Performance Class and Grade.

Our comprehensive testing methods adhere to industry standards, ensuring optimal product performance, code compliance, and consumer satisfaction. We carefully assess factors like air leakage, water penetration, and Uniform Load Deflection, among others.

The results guide us in assigning a performance class (R, LC, CW, AW) and grade (PG), essential aspects for fenestration products’ rating and labelling. Moreover, we assist with product labelling so your customers can easily comprehend their purchases’ specifications.

Embrace freedom through knowledge with our meticulous evaluations that meet stringent performance requirements and elevate your products within this competitive market.

Types of Evaluations

Let’s delve into the variety of evaluations we conduct for doors and windows, shall we? We perform comprehensive tests to ensure your windows, doors, and skylights withstand tough environments and daily usage.

  • Operating Force Evaluation: We measure the force required to open, close, or slide your product. This ensures smooth operation.
  • Water Penetration Resistance: Tests are conducted under simulated rain conditions to check for water leakage.
  • Uniform Load Deflection: We assess how much your product deflects without permanent deformation by applying a uniform load.
  • Uniform Load Structural: We verify that your product does not break when subjected to a higher uniform load and assess any resulting permanent deformation.

At LabTest, we’re committed to providing reliable fenestration testing services.

Frequently Asked Questions

Apartment and Office Buildings Exterior Windows

What are some common materials used in fenestration systems manufacturing?
The Building Energy Data Exchange Specification (BEDES) states that fenestration frame systems may be made wholly of steel, totally of vinyl, or any combination of steel and other materials. Materials are frequently chosen for durability, affordability, and recyclable nature. Ongoing innovations in the manufacturing process continually improve their performance and environmental impact.
How often should fenestration systems be replaced or upgraded?
We recommend upgrading or replacing fenestration systems when they show signs of wear and tear. In addition, technological advancements can also warrant an upgrade. Effective decision-making in these cases usually involves regular maintenance checks and cost analyses.
How does the installation process impact the performance of windows, doors, and skylights?
The importance of professionally trained installers cannot be overstated. They minimize handling errors and optimize the performance and durability of your window and door products.
How does the design of the fenestration system influence its energy performance?
Design is critical to energy efficiency. Sound design principles, appropriate glazing options, and addressing thermal bridging are integral to achieving top energy ratings.
What is the process for obtaining certification for a newly developed fenestration product?
The certification process at LC is simple: Assess the certification costs, meet the application requirements, and you’re ready to go. Plus, we provide regular renewals to ensure ongoing compliance.

We believe in a future where fenestration systems can reach their peak performance, contributing to energy efficiency and durability. So come, let’s reshape the future of buildings together!

For any questions about Fenestration standards or to schedule a test, please contact us at info@labtestcert.com.

LabTest Certification Inc. Building

Go to Top