What Is Cement Screed Floor

1 tonne of flooring grit or sharp sand mixed at 4 sand to 1 cement will cover approximately 15 square metres of floor when laid at 40mm thick.

What is cement screed floor.

Screed is not concrete while the chemistry between the two isn t too dissimilar the concrete creation process is almost identical there are a few key differences that. It usually laid to be about 75mm thick and should always be laid by a skilled professional. Laying a level floor screed over a large area is difficult and to do so by eye requires years of experience. The screed is usually a simple cement aggregate and sand mix but proprietary screed mixes exist for specialist use.

It may be applied onto either a solid in situ concrete ground floor slab or onto a precast concrete floor unit. Screed is a thinner layer of concrete which s typically poured over a base floor to help form a smooth floor coating to provide a strong foundation for the top floor. A floor screed is usually a cementitious material made from a 1 3 or 1 4 5 ratio of cement to sharp sand. Screeds generally follow a mix proportion of 1cement.

Screed is usually applied on top of the concrete slab and is most commonly used as a finishing layer on internal floors or to level the floor prior to final floor coverings carpet tiles natural stone linoleum wood flooring resin coatings etc. 3 coarse aggregate 10 mm maximum aggregate size should be considered if the floor screed thickness is greater than 40mm. 3 sands or 1 portland cement. 3 5sand 0 4mm washed sharp sand for levelling screeds.

There are many proprietary screeds on the market and information about these can be obtained from the manufacturer. If the thickness of the floor screed does not exceed 40mm then the recommended mix is 1 portland cement.