Bochemit QB Profi

Bochemit QB Profi - long lasting protection against mildews, wood-destroying fungi and insects

A concentrated with water dilutable wood preservative. The product has been designed for impregnation of construction timber for interior and exterior applications. When used in the exterior, it is recommend apply the product using the method of long term soaking or apply a finishing coat. The product provides the timber with long term protection against wood decaying insects, wood decaying fungi and mildew.


For surface, semi-deep and deep impregnation of timber, roof trusses and other building wood for construction and reconstruction works both indoors and outdoors. It provides long-term protection of wood against wood decaying fungi (including Serpula Lacrymans), mildew and wood decaying insects. Additional coats may be applied after drying up.


  • coat
  • spray
  • immersion
  • pressure-vacuum impregnation (only colorless variant)

Indication colour:

  • colourless
  • brown
  • green


  • 1 kg of the concentrate = 50 m2 

Active substances:

Alkylbenzyldimethyl ammonium chloride 
Boric acid 

Life span of performed protection: 

  • 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, P, IP, 1, 2, 3, D, SP


5 kg, 15 kg, 50 kg, 500 kg

Shelf life:

36 months 

Recommended concentrations of working solutions and minimum consumption of Bochemit QB Profi

Use class according
to EN 335
Concentrate dilution
Application method
Interior (1-2)  10 % 1:9 20 g/m2 coat, spray (1-2x)
5-10 % 1:19 - 1:9 20 g/m2 immersion
min. 1% min. 1:99 5 g/m3 pressure-vacuum impregnation**
Exterior (3)  10-15 % 1:9 - 1:6 40 g/m2 coat, spray (2x)
 5 % 1:19 50 g/m2 long term immersion
min. 2% min. 1:49 15 g/m3 pressure-vacuum impregnation**

*only with suitable top coat 

** only colorless variant


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 are 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

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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