This part of BS 8204 gives recommendations for the design and installation of trowel finished polymer
modified cementitious levelling screeds and wearing screeds, where the proportion of polymer solids based
on the mass of dry cement is at least 4 %, as bonded screeds applied to direct finished concrete slabs, fine
concrete screeds and to existing concrete floors within buildings.
This British Standard does not apply to unbonded screeds, floating screeds, pumpable self-smoothing
screeds, or those laid monolithically, neither does it apply to two-component aqueous thermosetting
polymer dispersions.