• NHL Top Historic

    Article No. 049025

    NHL Top Historic

    Finishing render based on NHL 5

    Colour: grey | 0490
    Size / Quantity

    Product specifications

    On delivery

    Flexural tensile strength (28 days) 0.9 N/mm²
    Reaction to fire Class A1
    Compressive strength (28 d) 3.5 N/mm²
    Maximum grain size Approx. 1.2 mm
    Layer thickness Max. 20 mm
    Water requirement Approx. 16.5%, corresponds to 4.1 l / 25 kg

    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
    • Finishing render for the repair, renovation and restoration of old building facades and historic buildings and monuments


    • Formulated according to the principles of historic building protection
    • Cement-free
    • Low-stress hardening behaviour
    • Low modulus of elasticity
    • Moisture- and climate-regulating
    • Preparation
      • Substrate requirements

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

      • Preparations

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


        Substrate: absorbent with low strength

        Apply product as a bonding layer > 50% opaque.


        Substrate: weakly absorbent

        Apply product as a scratch coat (contact layer).

    • Application
      • Application temperature: min. 5 °C max. 25 °C
      • Using a suitable tool, apply the product as a contact layer.

        Briefly leave to semi-harden then apply the entire coating thickness.

        Maximum layer thickness approx. 20 mm (depending on the specific formulation).

        Smooth the surface using a suitable tool.

        Finish with a wooden or plastic board.

    • 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.

    • Working tools / cleaning
      • Mixing tool, fine plaster trowel, smoothing trowel, broom

      • 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

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

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

        May contain traces of pyrite (iron sulphide).

        Do not use on gypsum-based substrates.

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

    • 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.