What Is Cement Screed Floor

Laying a level floor screed over a large area is difficult and to do so by eye requires years of experience.

What is cement screed floor.

The screed is usually a simple cement aggregate and sand mix but proprietary screed mixes exist for specialist use. A floor screed is usually a cementitious material made from a 1 3 or 1 4 5 ratio of cement to sharp sand. 3 sands or 1 portland cement. There are many proprietary screeds on the market and information about these can be obtained from the manufacturer.

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. It may be applied onto either a solid in situ concrete ground floor slab or onto a precast concrete floor unit. 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. 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.

Screeds generally follow a mix proportion of 1cement. 3 5sand 0 4mm washed sharp sand for levelling screeds. A screed concrete floor is simply a layer of finer concrete laid on top of a pre existing and cured concrete base. 3 coarse aggregate 10 mm maximum aggregate size should be considered if the floor screed thickness is greater than 40mm.

Floor screed is a simple mixture of water ordinary cement and graded aggregate such as sharp sand to create a smooth hardwearing sub floor. Screed on the other hand is a thin layer of cement paste and sand fine aggregates laid on to a concrete floor base or underfloor heating to act as a smooth flat levelling surface for taking on the final floor finish.