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    MasterTop 518 - Fast setting site mixed screed mortar – for fast track installation of cementitious screeds 

    How does MasterTop 518 work?

    MasterTop 518 is a pre-bagged cementitious binder for site mixed screeds; the product is intended to be mixed with approved aggregates. MasterTop 518 is specially formulated to:

    • Improve workability of the mixed screed.
    • Maximise compaction of the laid screed.
    • Reduce shrinkage in the drying screed.
    • Ensure a rapid drying time of the screed
    • Provide a site mixed product of consistent performance.

    What is MasterTop 518 used for?

    MasterTop 518 ideal as a solution in the following areas:

    • For indoor and outdoor use
    • For areas which are exposed to permanent wetness.
    • For fast track bonded screeds and screeds installed on an isolating or insulating layer.
    • Suitable for heated screeds.
    • As repair mortar for concrete floors and cementitious screeds.
    • For layer thicknesses from 10 to 80 mm for continual layer of application.

    What are the benefits of MasterTop 518?

    MasterTop 518 offers the following advantages:

    • Can be tiled after approximately 3 days, already walkable after approx. 1 day.
    • On-site mixing of sand required.
    • Different mixing ratios possible.
    • Long working time, can be worked with and smoothed for almost 1 hour despite of short curing time.
    • Suitable for application by pump, even at higher temperatures.
    • Temperature resistant from -30°C to +80°C, therefore suitable for balconies, terraces, garages, industrial floor coverings cleaned with superheated steam.
    • Insensitive to moisture, therefore suitable for areas exposed to permanent wetness.​


    JRef - MasterTop 518

    pdf (88.18 Kb)

    MasterTop 518_TDS

    pdf (512.65 Kb)


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