The invention relates to a method for the production of fire-resistant
dense moulded pieces made from wood fibres, mixed with water glass as a
binding flame-protection agent at a temperature above ambient
temperature. A non-woven fibre formed from the above mixture is
compressed to a density of <350 kg/m.sup.3 and then the hardening of
the binding flame protection agent carried out in a closed press in the
compressed state at temperatures above 80.degree. C.