The paper deals with determination and classification of the mechanical parameters of cement fibre boards (CFB) with cellulose and PVA reinforcing fibres. The cement fibre material with reinforcing fibres is produced using the Hatschek process, where the fibres are arranged in the production direction and the curing is subsequently verified. Test experimental samples, specimens are created from the same production batch, and are produced orienting all of them in the production direction to determine the characteristic for an orthotropic material. The fracture mechanical parameters such as fracture energy and work of fracture were then determined and verified as well. Records will be made for the determined crack mouth opening displacement (CMOD) and displacement (d) of test specimens. The loading directions are given to cover the determination of the mechanical parameters of the material. These measurements are intended to complement the mathematical model that uses FEA modelling for subsequent implementation of the material into civil engineering structures or details. Display omitted •Determination of fracture properties of CFB with cellulose and PVA fibre.•A new CMOD measurement method was developed for smaller test specimens.•The obtained fracture energy values were implemented in the FE Analysis.•Validation of the numerical model with fracture parameters via experimental tests.