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.


Apply today to find out and see how we can help your insulation product gain acceptance in the marketplace


At the BBA, we provided construction product manufacturers third party approval for their Cavity Wall Insulation (CWI) and External Wall Insulation Systems (EWIS), through a rigorous testing, assessment and approval process.

Our UKAS accredited Agrément Certificate, helps to provide reassurance to specifiers, architects, contractors and end users that the BBA has approved the products to the required stands and Building Regulations.

Apply today to and see how we can help your insulation product gain acceptance in the marketplace.

What is Cavity Wall Insulation (CWI)? 

Cavity wall insulation (CWI) is a type of insulation inserted into the space inside the walls of a property – the cavity. The cavity is formed by two walls of brickwork built close together, between which the insulation can be inserted.

Most homes built after 1920 have cavities, whereas older homes tend to have solid walls. More modern properties are usually constructed with a layer of insulation boarding between the walls, especially if they have been built in the last 20 years.

There are many types of CWI for different property types, including mineral wool, bead or foam.

What is an External Wall Insulation System (EWIS)?

External wall insulation (or EWI), is insulation fitted to the outside of a home, where cavity walls are not present. These tend to be properties of solid wall construction or system-built homes with steel or timber frames.

EWI will change the visual appearance of a property and many architects, and contractors choose to install it to improve the aesthetics of the properties they are renovating.

EWI systems are usually made up of expanded polystyrene, mineral wool, polyurethane foam or phenolic foam, topped off with a reinforced cement-based, mineral or synthetic finish and plaster.

Apply today to find out how we can help your insulation product gain acceptance in the marketplace


Product Approval services

Crack Repair Systems

Apply for a BBA HAPAS Certificate today.

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BBA Agrément Certificate

BBA Agrément Certificate is a mark of excellence based on rigorous national and European...

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Wall and Floor Components

Apply today to have your walls and floor components Certified by...

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BIM Object Assurance

BIM Object Assurance validates that your BIM object data has the quality required to...

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Cementitious and Masonry Products

Apply here to find out how we can provide you with the assessment,...

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Start your Fenestration product or system certification by applying for BBA Agrément...

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