Streszczenie:

The paper presents analysis of existing concrete tiles roofing on outbuildings in selected localities of the Pińczów district. On the basis of the observations on the spot it was established that concrete tiles constitute 18% of all roof coverings in the investigated area. It is the most frequently used on livestock housing. It was noticed that of all concrete tiles, 81% are the products manufactured using traditional methods, directly on the construction site. Water absorption by weight was determined for selected concrete tiles in order to assess the technical state of existing concrete tiles roofing. The tests of water absorption by weight revealed about 1.6% lower water absorption for tiles mass produced by industry than for traditionally manufactured ones. The tiles utilised on buildings for more than 40 years were characterised by even 0.7% increase in water absorption by weight in comparison with non-utilised tiles.