Gypsum finish coat FINISH Gs-1 Megaron

Megaron
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Mark: Megaron
Code: SM-Z-GS-1_20
Order by phone: +34 922 876 695
  • Specification
  • Description
  • PURPOSE
    Internal gypsum finishing under paint coatings and wallpapers
    It is designed for use in dry grinding technology.
    PROPERTIES
    COLOR
    Light grey
    SETTING TIME
    Bonding time, i.e. the time after mixing with water at 20°C and water/binder ratio 1:2 is approximately 1.5 hours. Lower temperatures and more water prolong the setting time, while higher temperatures and less water shorten the setting time. At temperatures below +5°C, the setting reaction almost completely ceases.
    OPEN WORK TIME
    Open time, i.e. the mortar applied on the substrate can be leveled and corrected depends on the surface absorptivity and thickness of the applied layer - it is about 15 min on average. In case of thin layer and very absorptive substrate this time may be reduced to 2-3 min. However in case of several millimeter thick layer applied on non-absorptive substrate the open work time is extended practically until the setting reaction starts
    DRYING TIME
    Drying time of the set product depends on the layer thickness, ambient temperature and ventilation conditions. A 1 mm thick layer dries in 2-3 hours in ventilated rooms at +20°C. When the finish coat is a few millimeters thick and the ambient temperature is low, this time may be prolonged to a few days. In extreme cases with lack of ventilation and high humidity the finish coat does not dry at all
    STRENGTH
    A gypsum finish coat achieves full strength and adhesion only after the setting process is properly completed and the mortar is completely dry. Before it dries, it may be soft and appear not fully set. As with all gypsum binders, mortar that is set but still wet has approximately 30% of the strength achieved when dry. Layer thickness The recommended thickness of gypsum finish coats ranges from 1 to 5 mm; however, depending on the needs, a much thicker layer can be applied at one time if the mortar's consistency allows it. When applying layers thinner than 1 mm, there is a risk of water evaporation before the setting reaction is completed and, consequently, the finish coat will not be suitable for painting or wallpapers. It does not shrink during setting and drying. 6.
    LAYER THICKNESS
    Recommended thickness of gypsum finish coats ranges from 1 to 5 mm; however, depending on the needs, a much thicker layer can be applied at one time if the mortar consistency allows. When applying layers thinner than 1 mm, there is a risk of water evaporation before the setting reaction is completed and, consequently, the finish coat will not be suitable for painting or wallpapers. It does not shrink during setting and drying.
    PACKAGE
    20 kg

  • WARRANTY
    Within 12 months from the date of production specified on the packaging, the manufacturer guarantees the standard properties of the product, provided that it is used in accordance with the intended use and generally accepted building practice and stored in accordance with the above recommendations. The product has a Declaration of Performance and Certificate of the National Institute of Hygiene.

    TECHNICAL DATA
    Beginning of setting 90 min.
    Gypsum binder content less than 50% by weight
    Bending strength ≥ 1.0 N/mm2
    Compressive strength ≥ 2.0 N/mm2
    Adhesion to concrete substrate 0.9 N/mm2
    Water to product weight ratio 0.4:1
    Mortar yield 1kg/dm3
    Consumption at 1 mm layer approx. 1 kg/m2
    Conformity to European Standard EN 13279
    Application temperature from +5° to +30°C