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Self-Leveling Screeds

Screed serves as a loading layer offering flatness and additional strength to the floor system. In the last  30 years self-levelling screeds have emerged worldwide, in response to increasing demand for quicker building construction and healthier working conditions. A self-levelling screed is flowable & pumpable, it levels on its own and offers a considerable gain of time on the job-sites. As the term self-levelling implies, the use of superplasticizers is necessary  to achieve high flow without the need of extra mixing water, and as such preserves the cohesion of the screed. Typical thickness of application: 20-70 mm

Floors – whether residential or industrial – usually consist of a multi-layers system comprising:

  1. Concrete slab
  2. Insulating system + heating system
  3. Screed (self-levelling or traditional)
  4. Self-levelling underlayment
  5. Tile adhesive
  6. Floor finish coat (parquet, soft covering, tiles, etc.)

Comparative table

Additive Types
Active matter (%)
Dry content (% by mass)
Lithium sulfate monohydrate (%)
Bulk density
pH (5% solution)
Particle size (% > 600 µm)
Particle size (% > 500 µm)
Particle size (% < 125 µm)
Particle size (% > 200 µm)
Viscosity (mPas)
Alkali as Na2O eq (% by mass)
Chloride content (% by mass)
Ash Content (ppm)
Water content (%)
Hydroxyl number (mg KOH/g)
CE Marking
Formaldehyde regulation
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