• MB PUReactive

    Article No. 300311

    MB PUReactive

    Hybrid waterproofing product for flat roofs and balconies

    3003 | MB PUReactive
    Size / Quantity

    Product specifications

    Reaction to fire Class B-s1, d0* (DIN EN 13501-1)
    BROOF class T1, T3 and T4 (DIN EN 13501-5)
    Density Approx. 1.33 kg/dm³
    Consistency Free-flowing
    Crack-bridging ≥ 3 mm (for a dry layer thickness ≥ 2 mm)
    Layer thickness 1.1 mm wet layer thickness yields a dry layer thickness of approx. 1 mm
    Pot life max. 90 min. (at 20 °C and 50% RH)
    Water vapour diffusion resistance µ = 2155

    * This classification applies to the following applications: The product must be applied directly and with no air gap on flat building materials that correspond to class A1 or A2-s1, d0 pursuant to EN 13501-1 and must have a thickness of min. 6 mm and a bulk density of min. 1350 kg/m². Otherwise, the reaction to fire is to be rated as "Class E".

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

    Field of application

    • Flat roofs, balconies, walkways
    • Areas with or without living space underneath
    • New buildings
    • Renovations
    • Material transitions


    • Approved for use in accordance with EAD 0303-50-00-0402 (formerly ETAG 005)
    • Very low emissions (GEV-EMICODE EC 1Plus)
    • Flexible crack bridging > 3 mm
    • Solvent-free
    • No unpleasant odour
    • Optimised for manual application to the surface
    • Perfect adhesion on virtually all substrates without the need for primer
    • High area output, very high-yielding
    • Fast drying times
    • Exceptional price/performance ratio
    • 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.

        Roughen non-mineral and pore-free substrates.

        Absorbent mineral substrates, not self-compacting concrete (SCC), may be slightly damp.

      • Preparations

        If necessary, MB PUReactive is applied to absorbent substrates as a contact layer at an application rate of approx. 500 g/m².

        Fill depressions > 3 mm using a suitable filler or MB PUReactive blended with Selectmix 0/10.

    • Preparation
      • Mixing ratio comp. A 1 : comp. B 1
      • Mixing time 3 min
      • Combination container

        Stir the liquid component with a suitable mixing tool.

        Loosen the powder component and add it in full to the liquid component.

        Mix for approx. 60 seconds.

        Remove the powder adhering to the side.

        Mix again for approx. 2 minutes.

    • Application
      • Application temperature: min. 5 °C max. 40 °C
      • Follow-up work and coverings

        Surface waterproofing + Detail waterproofing

        Apply MB PUReactive to the prepared substrate using a suitable tool.
        Embed MB PUReactive F-series fabric, taking care not to trap any air, and fully cover with the product (total application rate min. 3.0 kg/m²).

        Embed MB PUReactive F-series fleece overlapping at least 5 cm.

    • Application instructions
      • Moving the material (e.g. by stirring) in the mixing bucket can prevent premature skin formation.

        The adhesion to the substrate must be tested on a case-by-case basis.

        The maximum wet layer thickness should not exceed 3 mm.

        Protect fresh waterproofing from rain, frost and condensation.

        Direct sunlight and/or wind can cause accelerated skin formation on liquid-applied waterproofing materials.

        The minimum dry layer thickness is 2.1 mm.

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

    • Working tools / cleaning
      • Mixing tool, flat brush, roller, smoothing trowel

        Clean tools with water while the material is still fresh.

        Any material that has already begun to dry can only be removed mechanically.

    • Storage / shelf life
      • Store frost-free and cool / protect for moisture / close containers
      • Shelf-life 9 months
      • If stored unopened in its original container in a cool, dry place and protected against frost, the product will keep for at least 9 months.

    • Usage
      • 1.5 kg / mm thick layer / m²
      • Min. 1.5 kg/m²/mm dry layer thickness
        Total application rate min. 3 kg/m²

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

    • General information
      • The characteristic data of the product were determined under laboratory conditions at 20 °C and 50% relative humidity.

        Current regulations and legal requirements must be taken into account and deviations from these must be agreed separately.

        Certificates of suitability (EAD) must be observed during planning and execution.

        Special agreements and certificates of suitability can be downloaded online at www.remmers.com.

        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.

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