NBS Source
Sopro SLC 578 - Levelling Screed

Application

Fill clean container with 5.25 – 5.75 L water, add 25 kg Sopro SLC 578 and mix mechanically to homogeneous, lump-free consistency. Restir thoroughly after short maturing time. Then pour mixed self-levelling compound onto the prepared substrate and spread uniformly using squeegee or finishing trowel. A spiked roller may be used to release entrapped air from self-levelling compound while still fresh. Apply material to required thickness in a single coat. If in specific cases, application in several coats proves necessary, each coat shall be given adequate time to achieve walkability and be pretreated with Sopro HE 449 bonding emulsion prior to application of following coat. In case of low humidity and high room temperature, draughts and direct exposure to sunlight, freshly applied coat shall be covered with sheeting to ensure optimum, crack-free setting.


For treatment of large areas, Sopro SLC 578 may also be

efficiently prepared and applied using suitable mixing pump equipment. Particularly impervious floor coverings, e.g. parquet, linoleum, PVC etc., shall be laid at earliest after approx. 1 day (1 cm coat thickness) or after approx. 36 hours for maximum coat thickness of 15 mm, and after achievement of residual moisture content ≤ 1.8% CM. In damp and wet spaces, filler-coated surfaces shall be waterproofed with Sopro FDF flexible sealing compound, Sopro DSF 523 one-component flexible sealing slurry,

Sopro DSF 623 one-component flexible rapid-set sealing slurry, Sopro DSF 423 two-component flexible sealing slurry, Sopro TDS 823 two-component turbo sealing slurry, Sopro PU-FD surface sealant or Sopro AEB® membrane system.



Priming:

Sopro HE 449 bonding emulsion: For wet-on-wet application after short flash-off time of 10 – 15 minutes (max. 30 minutes). Sopro HE 449 shall be applied to form a shiny damp film, without ponding. Any dried films should be removed.


Suitable substrates include cement screeds, untreated concrete surfaces (min. 3 months old).


Sopro GD 749 primer: All absorbent substrates, e.g. cement screeds, concrete/untreated concrete surfaces (min. 3 months old). Sopro GD 749 primer should be applied in undiluted form.


Sopro HPS 673 special primer: All smooth, non-absorbent substrates, e.g. existing tile and terrazzo coverings or firmly adhering adhesive residue.


Sopro MGR 637 multi-purpose primer: Moisture-sensitive substrates, e.g. magnesium oxychloride (magnesite) screeds and calcium sulphate (anhydrite and self-levelling anhydrite) screeds.

Description

Rapid-set, self-levelling, cementitious filler for production of smooth, unbroken surfaces prior to flooring installation.

Low-chromate to Regulation (EC) No 1907/2006, Annex XVII.


For production of smooth, unbroken surfaces prior to installation of floor coverings, e.g. ceramic tiles, natural stone finishes, textile, elastic and parquet flooring. For coat

thicknesses between min. 3mm and max. 40 mm; for indoor use only.


Sopro FS 5 549 floor-levelling compound is recommended for thin-coat (≤ 3mm) applications; Sopro

FE 678 Rapidur® self-levelling screed is recommended for coat thicknesses >40mm.


Features and benefits:

  • For 3–40 mm coat thicknesses.
  • Pumpable.
  • Suitable for floor heating systems.
  • For indoor use.
  • Walkable: after 2–3 hours.
  • Suitable Sopro perimeter insulation strip.
  • Low-chromate to Regulation (EC) No 1907/2006, Annex XVII.
  • Coverage: Approx. 1.6kg/m² per mm coat thickness.

General information

Material

Cement

Uniclass

Pr_35_31_06_78 Self-smoothing levelling screed mixesPrimary

CAWS

M10/160 Proprietary self smoothing levelling screeds

M40/460 Smoothing underlayment

Product range

Floor Screeds

Specification data - Self-smoothing levelling screed mixes

WaterRequirement

5.25–5.75 L per 25 kg.

Coverage

1.6 kg/m² per mm coat thickness.

Drying time

Ready to receive covering

After 24 hours (approximately).

Application temperature

5–25°C (substrate, air, material).

Reaction to fire

Class A1 fl.

Thickness

3–40 mm.

Environmental information

Country of product manufacture

Germany

Digital objects

Platform Compatible Version Certified to
IFC

IFC2X3

5

1.3
Revit

Revit 2016

6

2.0
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Literature

TDS Sopro SLC 578 - Self Levelling Compound 3-40 mm

TDS Sopro SLC 578 - Self Levelling Compound 3-40 mm

Case studies

Cottage Dog Grooming & Day Care Newry | Level Rapid Floor | Sopro SLC 578 Self Levelling Compound

Cottage Dog Grooming & Day Care Newry | Level Rapid Floor | Sopro SLC 578 Self Levelling Compound

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