• VSM RZ Historic
  • VSM RZ Historic
    • VSM RZ Historic
    • VSM RZ Historic

    Article No. 056706

    VSM RZ Historic

    Fast-setting natural cement mortar

    Colour: grey-beige | 0567
    Size / Quantity



    Product specifications

    On delivery

    Reaction to fire Class A1
    Compressive strength 1 day: ≥ 1.0 N/mm²
    28 days: ≥ 3.0 N/mm²
    90 days: ≥ 4.0 N/mm²
    Dynamic E-modulus Approx. 10,000 N/mm²
    Bulk density of fresh mortar Approx. 2.05 kg/dm³
    Maximum grain size Approx. 2 mm
    Air void content ≤ 8%
    Bulk density Approx. 1.5 kg/dm³
    Water requirement Approx. 1 l/6 kg
    Compressive strength class CS III

    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
    • Laying and replacing natural stones
    • For all old mortars made of natural cement


    • Fast setting
    • Slow development of strength
    • Good flank adhesion
    • Good resistance to weathering
    • Not hydrophobic
    • This natural cement has been produced to the same formulation for more than 150 years and is also called Roman cement. It is based on a lime-marl from the Cretaceous period traditionally fired in a shaft kiln at low temperature.
    • Preparation
      • Substrate requirements

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

      • Preparations

        Pre-wet the substrate.

    • Application
      • Mortar cover / Filling knife / Trowel application
      • Drying time: can be worked over after 20 minutes
      • Application temperature: min. 5 °C max. 30 °C
      • Do not mix more mortar than can be used within approx. 20 minutes.

        Wait at least 24 hours before applying subsequent layers.

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

        Slight deviations in colour between different batches are possible.

        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
      • Mixing tool, trowel, smoothing trowel, filling knife

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

    • Storage / shelf life
      • Shelf-life 6 months
      • Store frost-free and cool / protect for moisture / close containers
      • Dry, in unopened containers, 6 months.

    • Usage
      • 1.8 kg / l void
      • Approx. 1.8kg/l void

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

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

        Do not use on gypsum-based substrates.

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

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

        The mixing water must be of drinking water quality.

        Special colour according to colour number (MF no., colour swatches, NCS etc.) or submitted sample (in the case of changing or alternating colours, clearly mark the desired colour).

        The colour that is obtained after drying and hardening depends on the ambient conditions and the processing method. For instance, a freshly smoothed surface will be lighter than one that is smoothed later or roughened. Different grain sizes of the same product may lead to slight differences in colour. Substrates soaked from the back may cause discolouration.

        Always set up a trial area/trial areas first.

        Alkaline binders may cause a dissolution process on non-ferrous metals.

        Deviations from applicable regulations 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.