The paper presents the brief information on particular results of experimental studies dealing with the problems of properties of materials based on fibre-cement and fibre-concrete composites, which are being recently developed, tested and verified, to use them in the plated components of load-carrying structures of building constructions. The problems mentioned are solved in the co-operation with the company of the Research Institute of Building Materials Inc. (“VUSTAH a.s.”) at Brno city in the Czech Republic. The attention is paid to two basic types of material: (i) fibre-cement composite used for the slab components intended for vertical or horizontal building or technology structures, such as permanent shuttering of bridges, timber floor structures and slab flooring, the wall cladding of buildings and formwork of components in manufacturing plants of the concrete units; (ii) glass-fibre-concrete composite mainly intended for the building façade claddings, but also for the objects of daily use. The experimental verification has been mainly oriented to the investigation of physical-mechanical properties, like as the tensile-bending strength, as well as the corresponding modulus of elasticity.