Sand for cement sand levelling screeds should conform to BS EN 13139.

The preferred grading would be a 0/4 sand with a fines category 1 within the range MP, and ideally have a grading between 20% to 66% passing the 0.5 sieve.

Where the screed is to be placed by pumping, a further restriction on the proportion passing a 0.250 mm sieve should be used.

Other sands may be used provided there is satisfactory data on the properties of similar levelling screeds made with them, e.g. bonded, unbonded or floating.

Interior Screed Ltd are the UK’s leading floor screeding contractors specialising in all types of floor screeding systems. Established in 2010 and working with many of the biggest and most prestigious names in the residential and commercial building sector’s we install screeds into building developments of all sizes. From complex large-scale commercial projects to residential and mixed-use contracts, we carry a comprehensive range of floor screeding products and services designed to offer our customers a one-stop floor screeding facility.

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