| 摘要 |
<p>At minimum the outside surface of ceramic, concrete or bitumen tiles of a roof covering is mechanically cleaned, e.g. by a grinding or by a flow of a cleaning medium, and on the cleaned surface, a protective penetration agent is applied. The agent is advantageously on the base of polymeric materials, e.g. polyepoxides, polyacrylates, polyurethanes or polycarbonates. The regeneration of the tiles of a roof covering is possible to be realized directly on a building roof.</p> |
