Glossary

B

BBA

British Board of Agrément – the premier independent quality assurance certification authority, which addresses relevant factors contributing to the fitness-for-purpose of building products.

British Standard

An official reference which may address either a recognised method-of-test or a code-of-practice.

BS

British standard, an official reference which may address either a recognised method-of-test or a code-of-practice.

BS EN

A British standard which is also identical to the relevant European Norm.

BS EN ISO

A British standard which is not only identical to the relevant European Norm, but also to the internationally recognised ISO standard.

Brush seal

Depending on the context, either: A seal element composed of nylon filaments, generally a minimum of 10mm long, and crimped into a metal spine – these are sometimes called ‘sweep action brushes’; or A short brush pile insert, fitted into an intumescent seal to provide smoke containment.