Article No. 040120

    SP Level

    Salt storing, WTA-compliant pore undercoat render in restoration render system for masonry subjected to moisture and salt loads

    Colour: grey (inherent colour) | 0401
    Packaging unit

    Product specifications

    On delivery

    Compressive strength CS III (average 5.5 N/mm²)
    Capillary water uptake > 1.0 kg/m²
    Porosity > 50% by volume
    Bulk density Approx. 1.0 kg/dm³
    Water penetration depth > 5 mm

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

    Field of application

    • Wall surfaces and masonry subjected to moisture and damaging salts
    • Old buildings, cellars and facades
    • Removal of salt and reduction of moisture
    • Condensate buffer and protective layer on internal seals

    Properties

    • High salt storing capacity
    • Porosity 51 vol%
    • High sulphate resistance and low active alkali content (SR/NA)
    • Enables water vapour diffusion
    • Capillary-active
    • Single-layer application thickness from 10 to 40 mm
    • Machine workable
    • Preparation
      • Substrate requirements

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

      • Preparations

        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.

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

        Substrate: absorbent with low strength

        Apply as a net-like bonding layer (surface coverage 50-70%) in a layer thickness of max. 5 mm.

        Alternative: apply product as a scratch coat (contact layer).

        Substrate: weakly absorbent

        Apply the product over the entire surface (100% coverage) in a layer thickness of max. 5 mm.

        Alternative: apply product as a scratch coat (contact layer).

        Substrate: mineral waterproofing grout

        U2_M_85

    • Application
      • Application requirements

        Temperature of the material, air and substrate: from min. +5 °C to max. +30 °C

      • One-layer

        Apply product using a suitable tool or machine.

         

        Two-layer

        Roughen the first layer with a render comb.

        Apply second layer once sufficiently dry.

        Level off surface with a long float.

        Use a render comb to roughen horizontally in preparation for the next layer of render after setting.

        VA1_M_725

         

    • 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.

        To ensure that the renovation is successful, the relevant drying conditions according to WTA Code of Practice 2-9-04/D must be met.

        Please contact Remmers Technical Service (phone +49 5432 83-153) before applying with machine processing.

        When processing in machines, the product-specific data, such as strength, air void content, etc. might change.

    • Working tools / cleaning
      • Mixer, trowel, smoothing trowel, wood float, plastic float, long aluminium float, render comb, broom Suitable machine technology

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

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

    • Usage
      • Approx. 9.5 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).

        Do not use on gypsum-based substrates.

        The mixing water must be of drinking water quality.

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

        Always set up a trial area/trial areas first.

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

        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.

    Possible system products