Isocrete K Screed FAST

As an Isocrete K Screed license holder we are one of only a limited number of floor screeding contractors authorised to install the award winning admixture. Guaranteed directly by Isocrete for 10 years, Isocrete K Screed Fast can be used in high traffic commercial areas to produce an rapid drying, high strength floor screed.

Isocrete K Screed Fast is a BBA approved, semi-dry cementitious floor screed that incorporates proprietary additives and installed as a proprietary screed with plasticising and accelerating additive’s that are mixed directly on site incorporating high strength ordinary portland cement with polypropylene fibres (if required). Isocrete K-Screed Fast is suitable for the majority of commercial and residential applications.

Product Compatibility

Suitable for underfloor heating systems
Bonded to concrete ground floor slabs
Installed to insulation boards
Used with precast concrete units or beams
Ideal for thin finishes such as vinyl, carpet, wood
High traffic areas, high resistance to site traffic


Screed can be trafficked and overlayed quickly
High strength and resistance to traffic
Incorporated in underfloor heating
Greater compressive strength
Licenced approved contractors only

Installed to 25N/mm2 and with the addition of polypropylene fibres within the screed mix ultimately enables us to achieve a more cohesive floor screeding material – reducing the risk of early shrinkage and cracking. By incorporating screeding fibres within the floor screed mix a three-dimensional system of secondary crack control reinforcement can be considered as a cost-effective alternative to steel wire fabric traditionally introduced for this purpose.

Allowing approximately 7 days per 75mm of thickness or 11mm per day. Should the screed be extremely thick, or the concrete base has excessive moisture content drying times may be affected. High humidity or low ambient temperatures can delay the drying out process, we ensure the correct floor screed type is specified at quotation stage.

Ready-mixed bulk loads of Isocrete K Screed fast can be delivered in tipper road trucks generally up to 10-20 tonnes. For smaller deliveries or to suit specific access requirements, Isocrete K Screed FAST deliveries can also be supplied in 1 tonne bulk bags.

Site mixed sand loads are delivered in tipper wagons or via bulk bags for smaller applications. Cement and Isocrete K-Screed fast deliveries where possible are despatched to site via moffett wagon allowing the cement to be easily positioned at mixing areas with minimal disruption to the site.

25N/mm2 compressive strength following 28 days. Isocrete K Screed fast characteristic’s include significantly reduced drying times improving final floor finish installation time frames. Rapid early strength development and final strength confirming to BRE Category A.