AC87 - Glass Fiber Reinforced Gypsum

Overview

Glass Fiber Reinforced Gypsum (GFRG) is a material made of gypsum plaster strengthened with glass fibers. It is an economical, lightweight, and durable replacement for traditional plaster, often used for decorative interior elements. GFRG can be molded into virtually any shape – for example, forming intricate ceiling panels, columns, or dome decorations – while being much lighter than solid plaster pieces. The glass fibers in the mix give the gypsum extra tensile strength, so the finished pieces are strong, not prone to cracking, and can be installed more easily.

Purpose

This acceptance criteria provides a basis for evaluating glass fiber reinforced gypsum products that may not be directly covered by existing codes. It establishes testing protocols, structural performance requirements, and quality standards needed for code approval of these decorative and functional gypsum elements.

Benefits of Compliance

• Nationwide acceptance by building officials for GFRG installations
• Streamlined approval process for decorative gypsum products
• Third-party verification of structural and fire performance
• Enhanced marketability for architectural elements

Resources

• ICC Evaluation Service