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Based on thermal performance of alternative materials, suitable guidelines could be evolved to. The results reveal a better performance of alternative materials compared to conventional material for the building envelope in tropical conditions. (ISO 13786: 2017, Versión corregida 2018-03). The Dynamic thermal performance study has been carried out as per UNI EN ISO 13786-2008 standard. This study proposes a critical analysis of the long-term effectiveness of national strategies applied to the building envelope to date to achieve the ZEB goal, emphasizing that long-term predictive analyses become relevant in current building design and should be considered in regulations. periodic thermal transmittance (evaluated in accordance with UNI EN ISO 13786 ) less than 0.10 W/m 2 K. UNE EN ISO 13786:2017 Thermal performance of building components - Dynamic thermal characteristics - Calculation methods (ISO 13786:2017, Corrected version 2018-03) Prestaciones térmicas de componentes para edificación. This study shows how, in hot climates, buildings constructed within the legal limits will suffer from overheating over the years, necessarily leading to a disproportionate, and more extensive, use of cooling systems throughout the year. Although with different regulatory limits, in the different climates across Italy, a growing trend towards a more insulated envelope, characterized by very low transmittances, has been observed over the years. Over time, Italian legislation has brought increasingly stringent limits on the design of the building envelope. This study concerns the dynamic thermal modeling over the years, until 2080, of a multi-residential building located in Lecce, a city in southeastern Italy, characterized by a Mediterranean hot summer climate. Despite this awareness, there is a lack of approaches and indicators at the regulatory level to quantify the long-term potential of strategies applied to buildings today. Average monthly climatic data according to UNI 10349-1. Zero Energy Buildings (ZEBs) are expected to play a significant role in reducing energy consumption and combating climate change.