Certifications to Look for in Trade Windows & Doors

Published 19 February 2026 by Bella
Categories News

When it comes to enhancing the security, aesthetics, and energy efficiency of your customers, selecting the right trade windows and doors is crucial. Here at Sternfenster, we understand that navigating the complexities of various certifications can be challenging. That’s why we’re here to guide you on the key certifications to look for when choosing trade windows and doors, ensuring you get top-quality products that meet rigorous standards.

The Significance of Product Certification

Product certifications are not just labels; they represent a commitment to quality and compliance with industry standards. These certifications ensure that the products you choose have been rigorously tested and verified for performance, durability, safety, and environmental impact. So, what certifications should you consider to ensure you’re making an informed decision?

British Standards Institute Kitemark

One of the most recognised certifications in the UK, the BSI Kitemark demonstrates that a product has undergone rigorous testing to meet the highest standards of quality and safety. Windows and doors bearing this mark assure superior performance and compliance with UK building regulations.

Certifications to Look for in Trade Windows & Doors

When specifying windows and doors for trade projects, certification is one of the clearest indicators of product quality, compliance and long-term performance. Recognised industry approvals confirm that products have been independently tested for safety, efficiency and durability. Understanding which certifications matter helps trade professionals choose systems that meet regulations, protect customers and reduce installation risk.

Certification What It Covers Why It Matters for Trade
BSI Kitemark Independent verification of product quality, performance and safety testing. Provides assurance that windows and doors meet recognised UK standards and reduce call-backs.
Secured by Design Police-backed security certification focused on crime prevention and product strength. Helps installers deliver enhanced security solutions that meet client expectations.
Energy Saving Trust / Efficiency Ratings Performance testing for thermal efficiency and energy conservation. Supports compliance with energy regulations and improves whole-home performance.
FENSA Compliance Certification confirming installations meet UK building regulations. Ensures legal compliance and simplifies documentation for installers and customers.

Secured by Design

This official UK Police initiative supports the principles of ‘designing out crime’. Windows and doors that are ‘Secured by Design‘ have been designed with strong security features to reduce the risk of a break-in. Look for this certification to enhance the security for your customers effectively.

Secured by Design

Energy Saving Trust Recommended

Energy efficiency is a key consideration for any business, not only to help reduce energy bills for customers but also to minimise environmental impact. Products that are marked as Energy Saving Trust Recommended meet stringent energy efficiency criteria. This certification is an excellent indicator of eco-friendly windows and doors that help maintain temperature and reduce energy consumption.

FENSA

The Fenestration Self-Assessment Scheme, or FENSA, is a government-authorised scheme that monitors building regulation compliance for replacement windows and doors. When you choose a FENSA-approved installer, you’re assured that the installation complies with building regulations, is energy efficient, and is registered with the local council.

windows and doors for trade

Why Choose Certified Products?

Opting for certified windows and doors does more than just fulfil legal obligations. It gives you peace of mind, knowing that the products will perform as expected and provide safety, durability, and efficient energy use. Certified products are likely to last longer, provide better insulation, and offer enhanced security compared to non-certified alternatives.

At Sternfenster, we pride ourselves on providing businesses with high-quality, certified windows and doors. Whether you are working on a new construction or home improvement project, we have a wide range of products that meet stringent industry standards.

Get in Touch With Sternfenster

If you need further information or guidance on choosing the right certified windows and doors for your customers, get in touch with us today. Our expert team is here to provide personalised advice based on your specific needs and preferences. Learn more about our products and get a quote to kickstart your project with confidence. Investing in the right certified products is not just a purchase; it’s a long-term investment in the comfort and security for your customers.

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