• WP Sulfatex rapid

    Article No. 042925

    WP Sulfatex rapid

    Quick-setting waterproofing mortar for grouting and filling with high sulphate resistance

    Colour: grey | 0429
    Size / Quantity

    Product specifications

    On delivery

    Flexural tensile strength (28 days) Approx. 5 N/mm²
    Compressive strength (28 d) Approx. 20 N/mm²
    Final set Approx. 60 minutes
    Water requirement 3.5 - 5.5 l/25 kg
    Water absorption coefficient w24 < 0.1 kg/(m2h0.5)
    Water vapour diffusion µ < 200

    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
    • Subsequent waterproofing of basements from the interior
    • Subsequent plinth waterproofing
    • Damp proofing for below ground waterproofing measures
    • Waterproofing of reservoirs against inside water pressure
    • Quick, waterproof repair of defective areas
    • Joint and surface filler
    • Production of sealing coves
    • Salt-loaded substrates


    • Single-layer coating thickness up to 50 mm
    • High sulphate resistance and low active alkali content (SR/NA)
    • Fast curing
    • Water pressure tight
    • Grouting to filling consistency can be adjusted by adding water
    • Preparation
      • Substrate requirements

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

      • Preparations

        Remove render and/or coatings at least 80 cm above the damaged area.

        In the floor-wall connection remove screed for a width of approx. 20 cm.

        Break off or chamfer corners and edges.

        Coves must be rounded out.

        W1-E: seal passing-through pipes by using the product to form a cove around them.


        Exterior priming:

        Prime mineral substrates with Kiesol (1:1 with water)/Kiesol MB.


        Interior priming:

        Prime mineral substrates with Kiesol (1:1 in water).


    • Application
      • Application temperature: min. 5 °C max. 30 °C
      • Mortar cover / Filling knife / Trowel application / Jointing iron
      • Application requirements

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

      • Bonding layer

        Apply product in a grouting consistency as a bonding layer.



        Apply product in a filler consistency to the wet bonding layer.

        The following layer is applied as soon as the preceeding one can no longer be damaged.


        Grout waterproofing according to PG-MDS

        Immediately after mixing, apply the material making sure the entire surface is covered.

        Surface waterproofing

        Apply two layers for waterproofing against ground damp.

        Apply three layers for waterproofing against water pressure.

        The following layer is applied as soon as the preceeding one can no longer be damaged.

        Horizontal waterproofing in and below walls

        Apply the product in two layers on the previously prepared substrate.

        The following layer is applied as soon as the preceeding one can no longer be damaged.

        Damp proofing

        Apply one layer on the previously prepared surface.


        Filler waterproofing

        Apply at least two layers of the product as a filler.

        The following layer is applied as soon as the preceeding one can no longer be damaged.


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

        Long waiting times for subsequent layers should be avoided.

        Protect wet mortar surfaces against frost, rain and drying out too quickly for at least 4 days.

        Eliminate all sources of moisture before commencing repairs.

        As water loads can vary, we recommend application in 3 layers.

    • Working tools / cleaning
      • Mortar cover / Filling knife / Trowel application / Jointing iron
      • Mixer, soft wide brush, ceiling brush, trowel, spreader or jointing iron

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

    • Storage / shelf life
      • Protect form moisture
      • Shelf-life 9 months
      • If stored dry in closed containers, the product will keep for approximately 9 months.

    • Usage
      • 1.6 kg / mm thick layer / m²
      • Approx. 1.6 kg/m²/mm layer thickness as grouting
        Approx. 1.7 kg/m²/mm layer thickness as filler
        Approx. 1.7 kg/m sealing cove

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

    • Application examples
      • Layer thicknesses and application rates for use indoors and outdoors

        Load group

        Minimum layer thickness (mm)

        Application quantity of fresh mortar (kg/m²)

        Powder application rate (kg/m²)

        Spreading rate 25 kg (paper bag) (m²)

        Waterproofing in and under walls≥ 2.0
        approx. 4.0
        approx. 3.2
        approx. 7.5

        Splashing water/plinth waterproofing

        ≥ 2.0
        approx. 4.0
        approx. 3.2
        approx. 7.5
        Soil moisture and non-pressing water≥ 2.0
        approx. 4.0
        approx. 3.2
        approx. 7.5
        Standing seepage water and pressing water≥ 3.0
        approx. 6.0
        approx. 4.8 approx. 5.2
        Water containers with water depths up to 10 metres

        ≥ 3.0

        approx. 6.0
        approx. 4.8
        approx. 5.2

        Water load and layer thicknesses

        Type of water loadMinimum layer thickness in mmFresh mortar application rate (kg/m²)Powder application rate (kg/m²)
        Soil moisture, non-standing seepage water (2 coats)


        Standing seepage water and pressing water (3 coats)          3

    • General information
      • The mixing water must be of drinking water quality.

        May contain traces of pyrite (iron sulphide).

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

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

        Solutions that diverge from current regulations must be agreed on separately.
        The "Guideline on planning and execution of waterproofing measures of building elements with mineral waterproofing slurries", published by Deutsche Bauchemie, 1st edtion, May 2002 must be observed.

        The relevant test certificates must be observed when planning and carrying out work.

        Always set up a trial area/trial areas first.

    • 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.