• Adolit BSS 1

    Article No. 216025

    Adolit BSS 1

    Water-soluble, boron-free fire retardant for wood impregnation

    Colour: clear | 2160
    Size / Quantity

    Product specifications

    On delivery

    Composition/consistency White, crystalline salt mixture
    Odour Odourless once dry
    Bulk density Approx. 0.95 g/cm³

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

    Field of application

    • For use indoors and wood not directly exposed to weather
    • For professional users only
    • Interior wood
    • Exterior wood not directly exposed to weather
    • Roof structures
    • Wall and ceiling panels
    • Wall and ceiling constructions
    • Shop fitting and trade fair stands
    • Theatre and stage constructions
    • Prefabricated timber houses
    • Stables, sheds


    • Water-based
    • Improves the fire behaviour of wood
    • Free from boron and biocides
    • Clear once dry: does not stain the wood
    • The impregnated wood retains its natural appearance
    • Approved for use in systems with selected decorative coatings
    • Easy to prepare with water
    • Preparation
      • Substrate requirements

        The substrate must be clean and free of dust.

        The substrate must be free of all traces of fungal or bacterial attack, algae growth or insect infestation.

        Permissible wood moisture content: u < 25%

        Thick solid timber ≥ 22 mm

        Thick tongue and groove joints ≥ 12 mm

        The wood must be cut to size and finished.

      • Preparations

        Do not attach metallic fittings prior to impregnation.

        Spacers must be inserted between wood layers (ideally plastic rods).

    • Application
      • Application temperature: min. 5 °C max. 30 °C
      • Pressure coating
      • Application requirements

        Temperature of the material, air and substrate: from min. +5 °C to max. +30 °C.
        Relative humidity max. 80%.

      • Vacuum pressure impregnation process

        Pre-vacuum: -0.9 bar (min. 30 min)

        Pressure phase: ≥ 9 bar (min. 4 hrs)

        Post-vacuum: -0.7 bar (min. 15 min)

        After re-drying (wood moisture content max. 15%) and removal of the excess salt residues by brushing, the treated wood can be coated with approved decorative coatings (see system products).

    • Application instructions
      • The treated components must be protected against rain and moisture (enclosed spaces, covered structures etc.) and must not be exposed to weathering.

      • Drying

        Re-drying: after approx. 4 weeks (at 23 °C and 50% RH)

        Technical drying in a drying chamber is recommended.

        Low temperatures, poor ventilation and high humidity delay drying.

        Wood moisture content may only be measured using the Darr method.

    • Working tools / cleaning
      • Pressure coating
      • Vacuum pressure impregnation process

    • 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
      • Total application rate spruce/fir 25 kg / m³
      • Spruce/fir: average application quantity ≥ 200- 250 g/m² (depending on the timber cross-section/planks) of wood surface to be protected and ≥ 25 kg salt/m³ wood
        For wood species not listed here, please consult Remmers Technical Service.

    • General information
      • The impregnation system must be provided with a suitable protective coating.

    • 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.