Product approval & certification

BBA certification is recognised throughout the construction industry as a symbol of quality and reassurance. It's the vital ingredient in the provision of assurance, quality and integrity to a plethora of stakeholders in the construction industry.

Competency Scheme

The BBA operates a scheme for assessing and monitoring U-Value and condensation risk calculation competency. The scheme promotes and assists with accurate, objective and consistent calculation of U-Values and condensation risk within buildings.


Registration under the BBA Competency Scheme provides reassurance to specifiers or users that the services or data being provided are supplied by an individual or company that has been subject to a rigorous, independent assessment process.

BBA/TIMSA U-Value and Condensation Risk Competency Scheme

The content of the scheme was devised in association with the Thermal Insulation Manufacturers and Suppliers Association (TIMSA), who continue to participate in maintaining its validity with on-going development. However, it is also open to individuals and companies who are not members of TIMSA.

The scheme is operated in four separate stages:

–   an initial screening
–   an office inspection
–   validation and conclusions (followed by the issue of a Certificate to the company that employs the Competent Person(s))
–   ongoing surveillance

Scheme members will be required to demonstrate appropriate technical competency and in-house procedural controls to ensure their declared calculations are reasonable. Members are then permitted to identify calculations covered by the scheme by means of the dedicated BBA Competency Scheme logo. The Competent Person is identified within the logo by the use of a unique number for each individual.

Product Approval services