Q-Mark window general performance scheme

Provide assurance that the windows installed on site meet the same high standards as those tested and therefore offer the same performance criteria. 
The Exova BM TRADA Q-Mark window general performance scheme was introduced as an entry level certification scheme covering windows produced to British Standards for most of the common material types.

The scheme certifies products for the material specific product standard and is the starting point for manufacturers to achieve the enhanced security and high performance Q-Mark schemes.
  • timber windows to BS 644
  • PVC-U windows to BS 7412
  • aluminium windows to BS 4873
  • steel windows to BS 6510
  • composite material windows
  • window hardware (for proving ability to comply with the test standards).
All the above types of products must pass initial type testing to:
  • BS 6375-1: Performance of windows and doors. Classification for weathertightness and guidance on selection and specification.
  • BS 6375-2: Performance of windows and doors. Classification for operation and strength characteristics and guidance on selection and specification.
Achieving Exova BM TRADA Q-Mark certification involves initial type testing and factory production control audits. Maintaining certification involves periodic audit testing and factory production control audits.
The benefits of becoming a member:
  • helps generate new business by enabling you to tender for the increasing number of projects that specify third party certification of window manufacturers
  • helps generate repeat business because it enhances your reputation for quality which in turn leads to customer loyalty
  • membership is voluntary and as such it provides a clear demonstration of your commitment to quality
  • you continue to benefit as levels of awareness of the scheme and the demand for third party certification continues
  • you benefit from association with Exova BM TRADA, widely recognised and accepted as a leading provider of third party certification
Contact us
e: adam.osborn@exova.com
+44 (0)1494 569 826
Sub-Contract Auditor Vacancies
Due to continued growth Exova BM TRADA are looking for sub-contractor auditors
For more information click here
Related certification
Why choose Q-Mark product certification?
Product certification is the ultimate endorsement of a product's performance. Products will always be made to achieve a particular performance, whether it's to a British, European or International test standard or simply to the manufacturer's own in-house specification.
Find out more