• SP Top rapid

    Article No. 040420

    SP Top rapid

    WTA-compliant restoration render for masonry with water and salt loads

    0404 | SP Top rapid
    Packaging unit

    Product specifications

    On delivery

    Reaction to fire Class A1
    External surveillance GG-Cert + WTA
    Capillary water absorption w24 ≥ 0,3 kg/m²
    Layer thickness One layer until 30 mm
    Bulk density Ca. 0,9 kg/dm³
    Water requirement Ca. 6,2-6,4 l / 20 kg
    Water vapour permeability µ ≤ 15
    Water penetration depth After 24 h < 5 mm
    Compressive strength class CS II (1,5 - 5,0 N/mm²)

    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
    • Rapid repair of wall surfaces contaminated by moisture and harmful salts (internal wall surfaces in basements and old buildings)
    • Facades, historic buildings and architectural monuments
    • Can be used in combination with SP Level (Art. 0401) in areas exposed to high levels of harmful salts
    • Can be applied in a single layer as an undercoat or finishing coat


    • Fast curing
    • High sulphate resistance and low active alkali content (SR/NA)
    • High salt storing capacity
    • Enables water vapour diffusion
    • Pore hydrophobic
    • Fibre-reinforced
    • Promotes drying
    • Single-layer application thickness up to 30 mm
    • 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 slurry

        Apply SP Prep (Preparatory Mortar) in nodules to the last grouting layer while wet as a fully opaque bonding layer.

    • Application
      • Mortar cover / Filling knife / Trowel application
      • Drying time: can be worked over after 30 minutes
      • Application temperature: min. 5 °C max. 30 °C
      • One-layer

        Apply the product using a suitable tool.



        Roughen the first layer with a render comb.

        Apply second layer once sufficiently dry.

        Embed reinforcement fabric in the upper third of the render, with fabric widths overlapping by at least 10 cm.

        Level off surface with a long float.

        Finish the surface once set.

        Prepare the surface for subsequent layers with a grated scraper after sufficient setting.


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

        On critical substrates (highly uneven and/or fissured) we recommend incorporating the reinforcement fabric in the upper third of the restoration render.

        Apply additional diagonal reinforcement to the edges of building openings.

        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.

    • Working tools / cleaning
      • Mortar cover / Filling knife / Trowel application
      • 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. 8 kg / cm thick layer / m²
      • Approx. 8.0 kg/m²/cm layer thickness, at 2 cm render thickness approx. 16 kg/m²

      • 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.