• Grobzugmörtel

    Article No. 051125

    Stucco GZ

    Quick hardening mortar for sculpting stucco mouldings

    Colour: light grey | 0511
    Size / Quantity

    Brochures and Catalogues


    Product specifications

    Compressive strength (28 d) > 5 N/mm² (M5)
    Maximum grain size < 1.5 mm
    Capillary water absorption w24 < 1.0 kg/m²
    Bulk density Approx. 1.25 kg/dm³
    Water requirement Approx. 5.5 l/25 kg
    Water vapour diffusion resistance µ < 18

    The stated values represent typical product characteristics and are not to be construed as binding product specifications.

    Field of application

    • For use indoors and outdoors
    • Creating and shaping stucco mouldings, profiles and cornices
    • Repair and restoration of facades/stucco facades


    • Fast curing
    • Single layer thickness 10 - 40 mm
    • Preparation
      • Substrate requirements

        Clean, dust-free and capable of supporting a load.

      • Preparations

        Roughen smooth surfaces.

        Pre-wet the substrate.

        When working on absorbent substrates, throw on SP Prep in clumps (50% coverage) and use ZM HF [basic] if necessary (in a mass ratio of 1:5 with water).

        When working on substrates with low absorbency, completely cover with SP Prep.

        The product can be applied immediately (wet in moist).

    • Application
      • Application temperature: min. 5 °C max. 30 °C
      • Mortar cover / Filling knife / Trowel application / Application by spraying
      • Depending on the desired profile thickness, apply one or more layers of mortar and level off quickly using a template.

        Use reinforcements if the application thickness is particularly large.

        Waiting time before final coating with fine mortar: approx. 2 weeks.

    • Application instructions
      • Once it has hardened, mortar must not be made workable again by adding either water or more wet mortar.

        Protect wet mortar surfaces against frost, rain and drying out too quickly for at least 4 days.

    • Working tools / cleaning
      • Mortar cover / Filling knife / Trowel application / Application by spraying
      • Mixer, smoothing trowel, trowel, template

      • Clean tools and equipment with water before the mortar sets.

    • Storage / shelf life
      • Protect form moisture
      • Shelf-life 12 months
      • If stored in an unopened container and in a dry place, the product will keep for approx. 12 months.

    • Usage
      • 1.1 kg / mm thick layer / m²
      • Approx. 1.1 kg/m²/mm layer thickness

      • Apply to a large enough trial area to determine the precise amount required.

    • General information
      • May contain traces of pyrite (iron sulphide).

        Low chromate content in accordance with Directive 2003/53/EC.

        The characteristic data of the product were calculated under laboratory conditions at 20°C and 65% relative humidity.

        The mixing water must be of drinking water quality.

        Always set up a trial area/trial areas first.

        Current regulations and legal requirements must be taken into account and deviations from these must be agreed separately.

        The relevant test certificates must be observed when planning and carrying out work.

    • Disposal instructions
      • Larger quantities of leftover product should be disposed of in the original containers in accordance with the applicable regulations. Completely empty, clean containers should be recycled. Do not dispose of together with household waste. Do not allow to enter the sewage system. Do not empty into drains.

    • Safety / regulations
      • For further information on the safety aspects of transporting, storing and handling the product and on disposal and environmental matters, please see the current Safety Data Sheet.

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