Remarkable 3-in-1 Pakis-Stem Green Roofs for Saving Thermal Flat Rooftop

Urban Farm DB summary

This research investigated pakis-stem blocks as a growing medium for green roofs, evaluating their 3-in-1 function as a lightweight growing medium, an easy-to-form urban farming system, and an eco-friendly external roof insulation. Measurements on rooftop surface and room thermal behavior showed that pakis-stem green rooftops reduced surface dry-bulk temperature by 16.4°C and ambient room dry-bulk temperature by approximately 7°C at noon compared to conventional rooftops. The surface and ambient room air temperature differences between pakis vegetative green rooftops and miana scrub green rooftops were approximately 7°C and 3°C, respectively.