MDF boards are a wood-based material that successfully replaces natural wood. They are made by pressing wood fibers with the addition of adhesives and organic hardeners, subjected to high pressure and temperature. As a result, the material has a homogeneous density and raw material composition throughout the entire cross-section. It provides exceptionally good machinability parameters while maintaining dimensional stability. Thanks to the Burnblock® fire-retardant impregnation, they can achieve a fire resistance class of B-s1;d0.

Moreover, Burnblock is:

What we say is what we can document – and we are clear and open about what we cannot document.

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medium-density fibreboard

According to classification EN 13501-1:2007+A1:2009 and EN 13501-2:2007+A1:2009

According to classification EN 13823 (SBI) and EN 14135:2004

Area of application interior solutions, exterior solutions, timber frame, wall, ceiling, floor

Wood SpeciesDensityMin. Thickness (mm)Reaction to
Fire Classes *1
Resistance to
Fire Classes *2
Wood fibers for MDF75019B-s1,d0

Fit for Purpose

Unconventional solutions require an unconventional approach.

You have an idea that does not fit into the current standards for fire tests?

We will turn it into a ready-made plan. We always approach new applications individually and with full commitment.


Our partners for service impregnation will be pleased to advice you about wood and wood treatment with Burnblock®.