Abstract

Subash Chandra Pradhan, L. Nagarajan

ABSTRACT

This study presents with a comparative analysis of the asphalt-saturated felt and synthetic underlayment fabrics, two of the critical materials used in roofing systems in order to provide secondary protection against environmental elements. Traditionally, the asphalt-saturated felt has been the standard choice due to its good affordability and familiarity. However, the actual emergence of synthetic underlayment’s—typically made from polypropylene or polyethylene—has introduced materials with superior properties, including higher tensile strength, enhanced UV resistance, improved moisture performance, as well as greater durability. As climate change and evolving building standards increase the main demand for resilient construction materials, this research examines the performance of both underlayment types under standardized laboratory tests and real-world conditions. The study also explores key parameters such as that of mechanical strength, moisture and UV resistance, installation practicality, as well as cost-effectiveness over a projected 20-year lifecycle. Findings aim to mainly bridge the gap between the theoretical performance data and field application outcomes.