Development and Characterization of Hybrid Composite Roof Panels Using Kevlar, Hemp, and Carbon Fabrics with Epoxy Resin

Advancing sustainable and high-performance materials adapted for roofing applications has emerged as a key priority area in materials science. This paper studies the mechanical of a new hybrid composite based on Kevlar, Hemp, and Carbon fibers, which can be used as a new alternative roofing composite, compared to well-known common building roofing materials like asbestos, cement and Galvanized Iron (GI). The prepared composite specimens are based on the hand layup process with 3 mm and 5 mm thickness values. They are characterized by their tensile strength, flexural strength, hardness, and water absorption. Out of the 3 used, the 5 mm composite had a tensile strength of 150 MPa, which was higher than asbestos by 3 folds (50 MPa) and cement by 5 folds (30 MPa) and considerably close to and under GI (180 MPa) The flexural strength values of the 5 mm composite were 180 MPa, exceeding the values of cement (40 MPa) and those of asbestos (60 MPa). The Shore hardness of the 5 mm composite was measured at 70 (Shore D), suggesting superior surface durability over conventional materials. It is ideal in moisture-prone environments, considering water absorption is less than 0.7%. The hybrid composite, therefore, proves to be a great competitor for roofing material, demonstrating potential for strength, durability, and less water absorption.