Bochemit Optimal Forte – concentrate

Bochemit Optimal Forte - preventive long term protection of timber against mildews, wood-destroying insects and fungi

Liquid wide-spectrum fungicide and insecticide water down concentrate for long-term preventative protection of timber, in both interiors and exteriors, against mildew and both wood-destroying fungi and insects. It is also highly resistant to washing off the active substances from timber due to weather conditions.


For surface impregnation of timber, timber constructions, and other construction cut timber during the constructions and reconstructions in interiors (use class 1 and 2 according to EN 335), and exteriors (use class 3 according to EN 335) of constructions against wood-destroying fungi Basidiomycetes, mildews and wood-destroying insects. After drying, it is possible to use cover paint.


  • coat
  • spray
  • immersion


The product after dilution is absorbed in timber, it does not form a layer on the treated timber surface, the treated timber does not smell. Transparent variant does not cause timber yellow shade.

Indication colour:

  • colorless
  • green
  • brown


  • 1 kg of the concentrate = 50 m2

Active substances:


N-(3-aminopropyl)-N-dodecylpropan-1,3- diamin 




Life span of performed protection:

considering the agent character, we assume the protection service life:

  • use class 1 and 2 (interior) – time unlimited
  • use class 3 (exterior) – no less than 10 years, followed by inspection of protection conditions in 2-year intervals

Type classification as per standard + EN 49 0600 – 1:

FB, IP, P, 1, 2, 3, S


1 kg, 5 kg, 50 kg

Shelf life:

24 months

Recommended concentrations of the working solutions and minimum consumption of Bochemit Optimal Forte

    Use class according
    to EN 335
    Application method
    Interior (1-2)
    Exterior (3)**
     10 % 1:9 20 g/m2 coating, spraying(1-2x)
    8 % - 14 % 1:12 - 1:6 20 g/m2 short-term immersion (3-10 s)*
    5 % 1:19 20 g/m2 immersion (15-60 min)*

     * the immersion period depends on the timber moisture
    ** only with the suitable cower paint

    Use biocides safely. Always read the label and product information before use.

    Materials for download: 

    Material Safety Data Sheet in English available upon request, please contact our Customer Service.

    Are you interested in our product, or would like more information?

    Please get in touch with us and we will be happy to help.

    By phone or e-mail: 
    Ing. Magda Macháňová
    Customer service
    Phone: +420 596 091 299

    I need more information

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    Wood impregnation and its use

    Examples of objects treated with Bochemit.


    Impregnation of wood and possibilities of its use

    Find answers to questions about the effectiveness of wood preservation and its application.

    We are proud members of the following institutions:

    obrázek eurochlorAsociace českých a slovenských zinkoven    nanoprogres  Nickel REACH Consortia  nano asociace  Svaz Chemického Průmyslu ČR  Zinc Reach  Cadmium reach consortium  The European Chemical Industry Council