So you have a project that needs GFRC architectural products. Maybe you need columns, cladding, planters or cornice. You have selected GFRC as a lightweight concrete alternative. Based on GFRC’s light weight, durability and freedom of design you’ve decided GFRC is the best product for your application. But wait, the work isn’t over yet. In this post we will take a look at the options and choices that are available.
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Stromberg GFRC is available in a range of colors. Since colors are blended on a custom basis you get thousands of possible color combinations. Present your color choices and we will make every effort to match them.
Almost any texture you may want is available in Stromberg GFRC. Possible textures include slate, tree bark, wood, smooth, aggregate, pebbled, limestone and travertine. Custom textures are available, as well.
As a general rule, GFRC architectural products are limited to 12′ to 14′ in any one direction. The maximum size for a GFRC panel or architectural piece may further be limited by transportation (how big a piece can be shipped), site access and efficient handling.
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The shell thickness for most Stromberg GFRC architectural products is 1/2″ to 3/4″. Thicker sections may be needed for certain applications. On GFRC panels with steel stud backups, the overall thickness may be 5″ to 8″ depending on studs spacing and wind loads.
Other considerations in detailing GFRC include attachment details, details for weather (slopes, drip edges and flashing), caulking joints, etc. Information can be found on the Stromberg Architectural products website.
Glass fiber reinforced concrete (GFRC) is a unique material used by an increasing number of outdoor living manufacturers, including American Fyre Designs. GFRC is composed of specially formulated cement, glass fibers, aggregates, and polymers. Instead of using steel for reinforcement, GFRC uses special alkaline resistant glass fibers and polymers. Weaving these materials into the build allows such products to be crafted with a thin, hollow construction that can weigh a fraction of the weight of a traditional pre-cast concrete fire pit. In other words? GFRC is an investment that’s often notably lighter and designed to entertain for years beyond its contemporaries.
GFRC is a slightly more complex process than a typical concrete pour, requiring a lot more attention to detail. Instead of pouring concrete into a form in a single fluid motion, the GFRC is layered within the mold, each layer having a specific function to the success of the piece. The part is constructed upside down on a flat surface and the layers are either hand laid or sprayed into the mold. The first layer of concrete is about 1/8 inch thick. After this layer hardens, but before it dries out, a second thin layer is added, this time with fibers in the mix. This layer is then rolled out to eradicate any lingering air pockets and this mechanically bonds the layers together. Finally, the rest of the concrete with the now-infused fiber can be added into the mold to finish the process. This finished product is a thin, hollow construction of GFRC, and is typically ½ inch to ¾ of an inch thick.
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