When supplying windows and doors to the UK market, it is crucial to ensure that they meet the stringent requirements set out in BS 6375-2.

This British Standard specifies the performance criteria for the operation and strength of manually operated windows and internal/external pedestrian doorsets in their fully finished condition. Compliance with BS 6375-2 is essential for guaranteeing that your products perform reliably and safely under various conditions.

Key Performance Criteria:

  1. Operating Force: This measures the effort required to operate windows and doors. Ensuring that this force is within the acceptable range is crucial for user convenience and accessibility.
  2. Impact Resistance: This assesses the ability of windows and doors to withstand impacts without compromising their integrity. This is particularly important for safety and durability.
  3. Mechanical Strength: This evaluates the overall strength of the windows and doors, ensuring they can endure the stresses of regular use without failure.

At Build Check, we provide comprehensive performance testing services through our UKAS-accredited in-house laboratory (No. 4044). Our independent and professional testing service is designed to save you time and money, ensuring your products meet all necessary standards efficiently.

Testing a Window

Why Choose Build Check Your Performance Testing

  • Expertise and Experience - Our team of engineers has extensive regulatory knowledge and product development expertise. This enables us to guide you seamlessly through the testing process, ensuring your products comply with BS 6375-2 without hassle.
  • State-of-the-Art Facilities - Our in-house laboratory is equipped with the latest technology to conduct thorough and precise testing. Being UKAS-accredited, we guarantee the highest standards of accuracy and reliability in our results.
  • Cost and Time Efficiency - By choosing Build Check, you benefit from our streamlined testing processes that are designed to save you both time and money. We understand the commercial pressures you face and aim to deliver results promptly.
  • National Coverage – Build Check’s network of engineers cover the length and breadth of the Uk and can provide a quick turnaround on attending site.

The Importance of Compliance


Meeting BS 6375-2 standards is not just about regulatory compliance; it also plays a vital role in building customer trust and ensuring the long-term success of your products in the market.

Products that pass these rigorous tests are proven to perform well under various conditions, offering peace of mind to both manufacturers and end-users.

Performance Testing

Get in Touch

Ensure your windows and doors meet the highest performance and safety standards with Build Check's expert testing services. Contact us today to learn more about how we can assist you in achieving BS 6375-2 compliance and enhancing the marketability of your products.