Green Roofs Thermal Analysis for Ébano, San Luis Potosí, Mexico

Abstract

This paper presents the results of an impact evaluation of green roofs on the environmental conditions of an urban module in Mexico by comparing temperature and relative humidity with and without this system. The experimental part was conducted through measurements taken at various times over a period from April to June 2024. Methodology was supported by data taken every hour (temperature and humidity sensors) within modules representing the green roof. By comparing the daily averages of temperature the data was analyzed, dew point, and relative humidity, the data were compared, showing the thermal advantages of green roofs with possibilities in reducing the urban heat island effect and improving comfort conditions. Results show that green roofs significantly influence the internal temperature of the modules, reducing it from 2 to 4°C compared to the modules without green roofs, particularly during peak solar radiation hours (2:00 p.m.). Green roofs increase relative humidity by 5-10%, which could be considered a positive effect on air quality and thermal comfort depending on the localization and context. The results help to support of the ability of green roofs to buffer temperature fluctuations, maintain more stable indoor climates, and contribute to better air quality. Valuable insights are shown for urban design and sustainable infrastructure planning, with the integration of green roofs as a strategy for enhancing urban sustainability.