• FF 1K

    Article No. 286807

    FF 1K

    Ready-to-use polymer dispersion for interior waterproofing

    Colour: dark | 2868
    Colour: dark | 2868
    Please choose a colour
    Size / Quantity

    Product specifications

    On delivery

    Binder Styrene-acrylic dispersion
    Density (20°C) Approx. 1.5 g/ml
    Solids content Approx. 77%
    Consistency Paste-like

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

    Field of application

    • For use on floors/walls outdoors
    • Suitable for water impact classes W0-I, W1-I and W2-I (wall only) according to DIN 18534
    • Bonded waterproofing under tiles and slabs
    • Tested according to DIN EN 14891
    • AbP according to PG-AIV-F
    • Moisture-sensitive, absorbent substrates, e.g. gypsum building materials
    • Absorbent mineral substrates, e.g. screed, cement plaster, lime-cement plaster, concrete, aerated concrete, sand-lime brick


    • Water-based
    • Crack-bridging ability
    • Can be applied by brush or roller
    • Fast drying
    • Suitable for use with underfloor heating
    • Watertight
    • Crack-bridging
    • Solvent free and very low in emissions (GEV-EMICODE EC 1 PLUS)
    • Available in contrasting colours
    • Preparation
      • Substrate requirements

        The substrate must be clean, dry, flat and capable of bearing a load, and free of dust, oil, grease and release agents.

      • Preparations

        Remove projecting seams and mortar remains.

        Close broken-out areas using a suitable mortar.

        As a general rule, priming with Primer Hydro F is required.

    • Application
      • Application temperature: min. 5 °C max. 30 °C
      • By brush / By roller
      • Pipe penetrations, internal and external corners, wall-wall and wall-floor transitions must be waterproofed using sealing tape or sealing sleeves from the Tape VF 120 series. The sealing tape or sleeves must be embedded in a bonding layer of FF 1K such that no bubbles are formed, and then overcoated with the first waterproofing layer.

        Apply the undiluted material generously over the entire surface using a suitable tool.

        The second waterproofing layer can be applied as soon as the first layer is dry enough that it can no longer be damaged.

        Once the second waterproofing layer is dry, the tile cement FL fix [basic] can be applied.


    • Application instructions
      • The finished waterproofing must not fall below the minimum dry layer thickness of 0.5 mm at any point.

        At least two waterproofing layers are required.

        In work areas subject to DIN 18534, the waterproofing layers must be applied in contrasting colours.

        Take appropriate measures to protect adjacent building elements and materials that should not come into contact with the product.

        Material not compatible with bituminous waterproofing.

      • Drying

        1st coat approx. 1 - 3 hours (+23 °C/50% rel. humidity)
        2nd coat approx. 4 - 8 hours (+23 °C/50% rel. humidity)

    • Working tools / cleaning
      • By brush / By roller
      • Paintbrush, flat brush, lambskin roller

        Clean tools, equipment and any splashed material immediately with water while still fresh.

    • Storage / shelf life
      • Store frost-free and cool / protect for moisture / close containers
      • Shelf-life 12 months
      • If stored unopened in its original container in a cool, dry place and protected against frost, the product will keep for at least 12 months.

    • Usage
      • Approx. 1.2 kg/m² (for a dry layer thickness of min. 0.5 mm)

      • Dependent on the substrate and any sealing tape used.

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

    • General information
      • Do not use the material for waterproofing in underwater areas.

        Deviations from applicable regulations must be agreed separately.

        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.