BS EN 13279-1 specifies characteristics and performance requirements for powder products based on gypsum binder for building purposes, including premixed gypsum building plasters for plastering walls and ceilings inside buildings where they are applied as a finishing material that can be decorated. These products are specially formulated to meet application requirements through the use of additives, admixtures, aggregates and other binders.

The standard covers both gypsum and gypsum-based building plasters for manual and mechanical application, as well as gypsum binders for direct use on-site and for further processing into gypsum blocks, gypsum plasterboards, and gypsum boards with fibrous reinforcement.

BS EN 13279-1:2008 supersedes EN 13279-1:2005 and includes technical changes relative to the 2005 edition, with revisions to definitions 3.1, 3.2, 3.9 and 3.20, and the inclusion of new definitions and requirements for finishing products.

The standard is classified under ICS codes 01.040.91 (Construction materials and building – Vocabularies) and 91.100.10 (Cement, Gypsum, Lime, Mortar).

Calcium sulfate used as a binder for floor screeds is explicitly excluded from the scope of BS EN 13279-1.

The standard is essential for manufacturers of gypsum binders and plasters seeking to demonstrate conformity, quality control and testing personnel conducting product evaluation, civil engineers, architects and contractors specifying internal wall and ceiling finishes, and building product distributors ensuring compliance with construction product regulations.

BS EN 13279-1 applies to gypsum mortar for internal, non-load-bearing partitions not exposed to water.