• Compress Render

    Article No. 107716

    Compress Render

    WTA-compliant salt-bonding render/sacrificial render

    Colour: grey | 1077
    Colour: grey | 1077
    Please choose a colour
    Size / Quantity

    Product specifications

    On delivery

    Reaction to fire Class A1
    Compressive strength CS II (average 3.0 N/mm²)
    Dynamic E-modulus Approx. 2000 N/mm²
    Hardened mortar bulk density Approx. 0.8 kg/dm³
    Open porosity Approx. 60 vol%
    Layer thickness Single layer up to 20 mm
    Two layers up to 40 mm, 10 - 20 mm per coat
    Bulk density Approx. 0.7 kg/dm³
    Water requirement Approx. 8.5 l / 16 kg
    Water penetration depth After 24 h > 10 mm

    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
    • Removal of salt and reduction of moisture
    • Sacrificial render on salt-containing substrates
    • Buffer layer under renders mixed according to historical formulations
    • Old buildings, cellars and facades


    • High salt storing capacity
    • Capillary-active
    • Reversible
    • Preparation
      • Substrate requirements

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

      • Preparations

        Pre-wet the substrate so that it is slightly moist.

        Remove render, paint layers and coatings at least 80 cm above the damaged area.

        Chase out friable joints to a depth of at least 2 cm.

        Apply product as a scratch coat (contact layer).

    • Application
      • Application temperature: min. 5 °C max. 30 °C
      • Mortar cover / Filling knife / Trowel application / Application by spraying
      • Apply product using a suitable tool or machine.

        Level off surface with a long float.

        Finish the surface once set.

        If applying an additional coating, use a grated scraper to roughen the surface once it is sufficiently dry.

        Waiting time before application of further layers: 3 days.



        Single layer thickness up to 20 mm.



        Layer thickness per coat 10 - 20 mm.

        Layer thickness up to 30 mm wet-on -wet.

        Layer thickness 30-40 mm, apply second layer once the first is sufficiently dry (approx. 12-24 hours).

        Roughen the first layer with a render comb.


    • 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.

        Hairline/shrinkage cracks are safe and are not cause for complaint as they do not impair the properties of the mortar.

        Please contact Remmers Technical Service (phone +49 5432 83900) before applying with machine processing.

    • Working tools / cleaning
      • Mortar cover / Filling knife / Trowel application / Application by spraying
      • Mixer, trowel, smoothing trowel, levelling board (aluminium), render comb, broom, grated scraper, spiked float, sponge float

      • Clean tools with water while the material is still fresh.

    • Storage / shelf life
      • Protect form moisture
      • Shelf-life 6 months
      • Dry, in unopened containers, 6 months.

    • Usage
      • Approx. 6.0 kg / cm thick layer / m²
      • Approx. 6.0 kg/m²/cm 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.

        Do not use on gypsum-based substrates.

        The mixing water must be of drinking water quality.

        Always set up a trial area/trial areas first.

        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.