Fox Bros Contracts use fast-drying screed such as Mapei's Topcem and and Larsen's Dry4 binder, These use super-plasticisers to reduce the amount of water needed to make the screed mixture pliable.
This in turn makes for a fast drying time as there is a higher cement to water ratio. Due to the lower water content the screed will achieve approximately 70% more strength and dry out much quicker than ordinary screeds. The drying time can be around 3mm per day.
Differing strengths and types of super-plasticiser allow for differing drying times depending upon the screed depth. It is suitable for most floor situations, over insulation, over damp-proof membranes, with underfloor heating and it can receive all types of floor finishes.
Accelerated screeds have to be mixed in a screed pump to ensure that the additives are thoroughly mixed and due to the average working time of the mix being approx. 60 minutes it has to be batched in stages
