windows and doors certification schemes

EN14351 – Windows and Doors

As a Kitemark licensee you are already ahead of your competitors.  With the introduction of EN 14351 BSI is modifying the Kitemark for Doors and Windows to include three new characteristics.  CE marking may cover only these three areas whereas the Kitemark will include these as well as air permeability, water tightness and resistance to wind loading plus durability and security.

The Kitemark schemes for Doors and Windows will address the relevant manufacturing and product characteristics to ensure that you have the relevant evidence to allow you to CE mark if you wish.  CE marking may not have the benefit of Kitemark but the introduction of EN 14351 can not be ignored.

BSI  is amending the Kitemark scheme to incorporate three characteristics of EN 14351 that are either covered by building regulation or have threshold values in EN 14351:

  • Dangerous substances
  • Load bearing capacity of safety devices
  • Thermal performance
  • Factory Product Control System
  • Other Performance Characteristics
  • Transitional Testing
  • Cascading:  BSI can offer testing for all relevant characteristics.

Timber Window Testing Schemes:

  • BS 644 – Timber windows
    Factory assembled windows of various types
    Specification
  • BS 7950 - Specification for enhanced security performance 
    of windows for domestic applications
    Security testing 

Timber Door Testing Schemes:

  • PAS 23 – General performance requirements for door assemblies
    Weathering tests for air, wind and water
  • PAS 24 – Enhanced security performance for door assemblies
    Security testing

Timber Window Accreditation Scheme and the BSI Kitemark

In July 2004, the British Woodworking Federation (BWF) formed a partnership between its Timber Window Accreditation Scheme and the BSI Kitemark scheme.

To mark this significant development, the BWF changed the name of its scheme to the TWA scheme.

At the heart of this partnership is the requirement that all TWA scheme manufacturers will have to gain BSI Kitemark certification (BS 644) for their factory glazed timber windows. In addition to the technical criteria the Kitemark requires TWA Scheme manufacturers to undergo:

  1. Independent and third party auditing of their products
  2. Compliance with the TWA Scheme quality control requirements
  3. Stringent operational and weathertightness tests for each window style
  4. An annual audit test of a random window sample
  5. Two rigorous factory inspections per year to ensure compliance with the technical criteria.

Aluminium Window Testing Schemes

  • BS 4873 – Aluminium alloy windows
  • BS 7950 – Specification for enhanced security performance of windows for domestic applications.  Security testing

Aluminium Door Testing Schemes

  • PAS 23 – General performance requirements for door assemblies
    Weathering tests for air, wind and water
  • PAS 24 – Enhanced security performance for door assemblies
    Security testing

UPVC Window Testing Schemes

  • BS 7412 – Plastics windows made from unplasticized polyvinyl chloride (PVC-U) extruded hollow profiles.  Specification
  • BS 7950 – Specification for enhanced security performance of windows for domestic applications.  Security testing

Schemes available for UPVC doors:   

  • PAS 23 – General performance requirements for door assemblies 
    Weathering tests for air, wind and water
  • PAS 24 – Enhanced security performance for door assemblies 
    Security testing

Windows testing schemes for metals, composites and other materials: 

  • BS 6510 – Steel-framed windows and glazed doors

Door testing schemes for doors made from metals, composites and other materials:

  • PAS 23 – General performance requirements for door assemblies
    Weathering tests for air, wind and water
  • PAS 24 – Enhanced security performance for door assemblies
    Security testing