• RM pro

    Article No. 059615

    RM pro

    Mineral stone substitution mortar for seamless feathering

    Grain size
    0596 | RM pro | only upon request, 6 weeks lead time, minimum purchase approx. 1000 kg
    Size / Quantity

    Product specifications

    Flexural tensile strength Normal approx. 3.5 N/mm²
    Soft approx. 2.5 N/mm²
    Compressive strength Normal < 13 N/mm²
    Soft < 8 N/mm²
    E-modulus (DIN 1048) Normal approx. 11 kN/mm²
    Soft approx. 5 kN/mm²
    Maximum grain size Fine 0.2 mm
    Medium 0.5 mm
    Coarse 2.0 mm
    Bulk density Approx. 1.5 - 1.7 kg/dm³
    Water requirement Consistency: for direct application
    Fine 0.2 mm: approx. 2.46 l/15 kg and 4.1 l/25 kg
    Medium 0.5 mm: Approx. 2.16 l/15 kg and 3.6 l/25 kg
    Coarse 2.0 mm: Approx. 1.8 l/15 kg and 3.0 l/25 kg
    Shrinkage deformation DIN 52450 After 7 days: approx. -0.2 mm/m
    After 28 days: approx. -0.6 mm/m

    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
    • Restoration, substitution and reprofiling of mineral substrates such as natural stone, brick, concrete and artificial stone
    • Reproducing ornamental building elements in a tamping procedure


    • Low free alkali content
    • Can be processed, outgoing to "zero"
    • Washable
    • Good flank adhesion
    • Low inherent stress
    • UV-resistant pigments
    • Can be made hydrophobic
    • Preparation
      • Substrate requirements

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

      • Preparations

        Any necessary cleaning measures should be performed as gently as possible, e.g. by spraying with cold or hot water or steam cleaning; stubborn dirt should preferably be cleaned using the rotec soft blasting method or Remmers cleaning products (e.g. Clean FP, Clean AC basic, Clean WR).

        Preserve valuable heritage ornamental elements and statues by carefully removing encrusted dirt and using the appropriate Remmers Stone Strengthener to carry out repeated intensive strengthening.

    • Application
      • Application temperature: min. 5 °C max. 30 °C
      • Mortar cover / Filling knife / Trowel application
      • Consistency: for direct application

        Apply a contact layer with a slurry (dry mortar/water) in a layer thickness of approx. 2 mm on the pre-wetted, matt damp substrate.

        Apply mortar in layer thicknesses from "zero" (depending on maximum grain size) to 3 cm wet-on-wet in the contact layer, 1 to 2 mm above the final surface.

        Joints in the masonry must be maintained.

        After sufficient hardening (when the grain pops), roughen the surface or scrape down to the final surface.

        Rework the repaired areas (using a scraper or abrasion tool) onto the structure surrounding the defective area.

        Consistency: slurry

        Apply the material to the pre-wetted, matt damp substrate.

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

        If necessary, remove excess material from the stone surface with a firm sponge (e.g. latex sponge).

        The type and duration of the reworking and surface treatment will influence the colour.

        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.

        Wait at least 24 hours before applying subsequent layers.

    • Working tools / cleaning
      • Mortar cover / Filling knife / Trowel application
      • Mixing tool, trowel, smoothing trowel

        Clean tools with water while the material is still fresh.

    • 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
      • Approx 1.6 kg / l void
      • Approx. 1.6 kg/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.

        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.