Products

Ready-to-use cement screed for indoor and outdoor use, as a floating, screeded or adhesive screed, heated or unheated concrete subfloor. Layer thickness 40-80 mm.

 General description

Screed is a special concrete mix used for pouring interior floor structures, especially where a straight, smooth, flat base is required for the final floor covering (e.g., parquet, tiles, laminate flooring).

Weber (part of the Saint-Gobain Group), a manufacturer of building materials, offers screed/concrete underlay products that have good mechanical strength and adequate adhesion.

2. Basic components

Cement – the "carrier" of screed concrete, ensuring the binding and hardening process.

Fine aggregates (building sand, fine-grained gravel) – these make up the bulk of the mixture.

Water – activates the cement and is necessary for hydration.

(Optional) additives – such as plastic fibers, superplasticizers, shrinkage reducers to improve workability and reduce the risk of cracking.

3. Typical technical parameters

Density: Screed concrete is generally denser than lightweight mortar; typically around ~2000–2400 kg/m³.

Compressive strength: Typically high for good screeds, depending on the type of screed (e.g., normal concrete screed, self-leveling screed).

Setting time/drying time: The setting and drying of the concrete substrate is critical; a certain degree of drying must be achieved before covering (this depends on the mixture, layer thickness, and environmental conditions).

Thermal conductivity / thermal expansion: As it is used for interior floors, it is important that the concrete can withstand temperature fluctuations well.