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Glass Fiber Reinforced Concrete (GFRC) is a proven engineered composite building material consisting of Portland cement, aggregate, color pigments, and glass fiber reinforcement. The glass fibers reinforce the concrete, much as steel reinforcing bars do in conventional construction. The glass fiber reinforcement results in a product with much higher flexural strength than normal concrete, allowing its use in thin-wall casting applications.
Formglas GFRC-L is similar to traditional GFRC in appearance except for the absence of a steel frame backing. GFRC-L is commonly used in low-rise exterior facades for applications such as panels (which are generally cast to an installation friendly maximum size of 3' x 4'), decorative elements (such as cornices, window and door frames, and friezes) and in certain high traffic interiors where high impact resistance is a desirable attribute.
GFRC-L which is produced to a weight of +/- 7 lbs per square foot (or 34 kg/m2) is a lightweight substitute for cast stone given its nominal 5/8" thickness and the absence of steel anchors. It can be used in either new construction or renovation of existing structures. Depending on the application, GFRC-L components allow for a variety of installation methods including construction adhesive and mechanical fastening.
The combination of GFRC and GFRC-L on a building exterior may provide architects and owners the opportunity to reduce cost as GFRC-L is less expensive than traditional GFRC, although GFRC-L has certain application limitations.
In North America specify GFRC-L under CSI MasterFormat Division 3 or Division 6.