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Abstract Interior finishes are important aspects of the healthcare facilities environment. Floors and walls coverings are the major elements that play an essential role in keeping a healthy environment inside various spaces of hospitals. Thus, it is necessary to give a priority to the selection criteria of finishing materials during the design process. In other words, healthcare facilities require special spec- ifications for interior spaces and finishing materials to prevent problems such as moisture penetration, water infiltration, and the growth of mildew and mould that is considered one of several elements responsible for occurring Hospital-Acquired Infections(HAIs). Therefore, the purpose of this research is to evaluate the influence of using Nano-materials in providing healthy, comfort environment for both patients and workers in healthcare facili- ties. The research was conducted based on visual observations and interview with managers of four hospitals in Egypt to collect data about the existing conventional used materials and the problems they are facing, followed by aggregating the results of evaluation studies conducted on these materials to select the best materials in terms of six criteria. Based on the analysis of the evaluation results, it was found that the materials used in these hospitals showed the best performance in comparison with other materi- als; however, these materials face some observed defects such as craks, tire marks, peeling, and scratchings. Therefore, the results of different laboratory tests conducted on nano-materials in pre- vious studies were analysed to prove the using of nano-technology in improving the characteristics and the performance of the tra- ditional materials against bacterial inhabitation on surfaces of various spaces through coating some materials with specific nano- materials or mixing nano-materials with the components of some used materials. As an example of applying such technology in interior design, data about five hospitals in other regions were obtained from government agencies and web pages as hospitals in Egypt did not apply this technique yet. Those hospitals ap- ply nano-materials on finishing materials in their interior design to evaluate their impacts in term of environmental impact and thermal comfort. The evaluation data emphasized that nano- materials significantly improve the functionality of the existing materials when added to them through coating or mixture. Finally, it was concluded from the various data mentioned in the study that nano-materials can solve the problems appeared on the existing conventional materials because they can change their components and increase their resistance to infection trans- mission and bacterial inhabiting. Also, applying nano-materials on the used ones can generally provide a healthy environment which is not suitable for the growth of bacteria or fungus. There- fore, it is recommended to implement Nano-materials in Egyptian hospitals as a solution to the occurred defects and increase the awareness of interior designers and architects about the benefits of these materials to encourage them use the nano-technique. |