GFRC Concrete

Glass Fiber Reinforced Concrete — a high-performance composite system for strong, lightweight, and precision-cast concrete products.

Countertops Wall panels Fireplace surrounds Architectural precast

GFRC combines portland cement, fine aggregates, acrylic polymer, plasticizers, admixtures, and alkali-resistant (AR) glass fibers to produce concrete that is significantly stronger, lighter, and thinner than traditional cast concrete. It is the preferred material for fabricators, countertop makers, and architectural concrete professionals who require precise surface quality, reduced weight, and reliable structural performance.

What is GFRC?

Glass Fiber Reinforced Concrete (GFRC) is a cement-based composite in which short alkali-resistant glass fibers are distributed throughout the matrix. The fibers act as internal reinforcement, improving tensile and flexural strength while allowing castings as thin as ½ inch. Acrylic polymer replaces a portion of mix water to further enhance flexibility, adhesion, and long-term durability.

Developed as a solution to the weight and cracking limitations of standard concrete, GFRC has become the go-to material for concrete countertops, architectural panels, fireplace surrounds, furniture, and decorative precast elements.

Why use GFRC?

Lightweight constructionPanels and castings can weigh 75–80% less than equivalent solid poured concrete.

Superior strengthAR glass fibers increase tensile and flexural resistance against load and thermal stress.

Thinner sectionsAchieve refined profiles from ½ inch that are not feasible with traditional reinforced concrete.

Exceptional surface qualityProduces smooth, detail-rich finishes ideal for countertops and architectural elements.

Reduced crackingFiber and polymer reinforcement minimize shrinkage stress during and after curing.

Versatile methodsCompatible with both spray-up and premix casting for professional or small-shop production.

Spray-up vs. premix GFRC

Spray-up GFRC

Uses specialized spray equipment to simultaneously deposit chopped AR glass fibers and cementitious slurry into a mold. Achieves the highest fiber content and is common in professional production and large-panel applications.

Premix GFRC

Blends AR glass fibers directly into the concrete mix before casting. More accessible for small shops, countertop fabricators, and decorative concrete makers. Works well for most countertop, furniture, and architectural casting applications.

Key GFRC materials

AR Glass Fiber

Alkali-resistant glass fibers provide tensile reinforcement and crack resistance. Essential for all GFRC applications — spray-up and premix.

KongKrete Acrylic Polymer

Liquid acrylic polymer that improves mix flexibility, strength, and curing performance. Replaces a portion of mix water at 10–20% polymer-to-cement ratio.

Optimum 380 Superplasticizer & P-120

Reduce water demand while improving flow and workability. Allows target consistency without excess water that would reduce final strength.

Super Six Admix

Multi-component admixture that improves density, flow, and surface finish quality in both premix and spray-up systems.

HP50 High-Performance Bag Mix

Pre-blended mix optimized for GFRC countertop and casting applications. Consistent batch-to-batch performance.

Ultracast 360

High-performance casting mix for demanding architectural and decorative applications requiring exceptional surface quality.