TS EN 13454-1

TS EN 13454-1 defines calcium sulfate-based binders, composite binders and factory made mixtures used in floor screed manufacture, and sets the basic requirements for these materials. It is concerned with products for interior building use and with the material properties needed to produce screeds, not with how the screed is installed on site.

What the standard covers in the screed supply chain

In general technical terms, a binder is the phase that gives a screed its cohesion and sets the conditions for hardening. A composite binder combines calcium sulfate with other constituents, which can alter workability, setting behaviour and final performance. Factory made mixtures are pre-formulated products supplied ready for use in screed production, helping reduce batching variability on site. These distinctions matter because the product form influences consistency, handling and the properties achieved in the finished screed.

Why the distinction matters for interior floors

Screeds create a level, continuous layer suitable for receiving floor finishes. Calcium sulfate screeds are widely associated with interior floor construction where a smooth base layer is needed, and they may contribute to thermal and acoustic performance depending on the overall floor build-up. This standard organizes the terminology and requirements for the materials themselves, while leaving application of the screed outside its scope.

• Calcium sulfate binders intended for interior use
• Composite binders made from calcium sulfate
• Factory made mixtures used in producing screeds covered by EN 13813
• Material definitions and requirements, not screed installation rules