Hello,

I have question concerning flooring materials requirements.

In our project we have industrial floor, which consists of (counting from ground level): polyethylene film, extruded polystyrene, wire mesh + concrete (class C30/37), floor hardener. Since general emission evaluation requirements are relevant for interior materials within waterproofing membrane, I would classify the concrete C30/37 the layer of waterproofing membrane. My assumption comes from the European standard EN 206-1 definition of C30/37 concrete  which defines it as waterproofing. Please let me know if my line of thinking is correct.

Thank you in advance for your answer.