E-glass chopped strand and roving fibers are a type of glass fiber reinforcement that are made from electrically melted glass. The main characteristics of e-glass fibers are high strength, stiffness, and heat resistance. Widely used as a filler and reinforcement in gypsum and drywall, E-glass fibers improve the performance and quality of gypsum and drywall by increasing their tensile and flexural strength, reducing their weight and shrinkage, and enhancing their fire resistance and sound insulation.