The role of preventive maintenance in protecting heritage and valuable buildings from the risks of climate change

: The phenomenon of climate change is considered one of the most important environmental problems resulting from the increase in unsustainable human activities within the built environment with its direct or indirect connection with the increase in consumption and mismanagement of non-renewable energy sources. Temperatures, winds and increased precipitation (floods) ... etc. The phenomenon of climate change is also a global problem that can be confronted, reduced, or mitigated as much as possible, to preserve all the physical components that make up the existing urban environments, the most important of which is of course the physical structures of the existing architectural heritage. The phenomenon of climate change and its accompanying extreme natural phenomena is considered one of the most important main factors that now have a negative impact on the sustainability of the physical structures of the architectural heritage and its durability over time, not only at the local level, but extends to the regional and global levels. (If it intersects with the tangible architectural heritage) to the destruction and loss of the cultural value contained in this heritage as an important resource of life and a source of inspiration within the societies incubating this heritage, it is irreplaceable and irreplaceable if it is damaged or destroyed. We live in the present and in the future, and we must pass it on to future generations. From the above it is clear the importance of research in protecting the existing architectural heritage from the dangers of climate change, and preventing, mitigating or limiting the negative effects associated with the imbalances in the usual climatic conditions (such as extreme natural phenomena) to which heritage buildings and valuable urban environment surrounding them are exposed, whether they are exposed to these The conditions are continuously or intermittently, by supporting their resilience and sustainability and the sustainability of the conservation programs applied to them in the face of climate change risks over time, whether at the level of the architectural and construction elements of heritage and valuable buildings or at the level of the surrounding urban environment.