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CAST STONE VS. PRECAST CONCRETE VS. ARCHITECTURAL PRECAST CONCRETE

March 24, 2020
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Cast stone falls within that broad definition where some people use cast stone, pre cast, architectural pre cast interchangeably. The biggest difference between architectural precast concrete and cast stone according to W. N. Russell III, executive director of the Cast Stone Institute is that “cast stone isn’t permitted to contain bug holes or air voids and must have a fine-grained texture, which is normally achieved by acid etching.”

Cast Stone is best suited as architectural and/or aesthetic uses with structural advantages of concrete since it can be reinforced.  Cast stone is made with highly fine and coarse aggregates such as limestone, marble, calcite, granite, quartz, natural sands, Portland cement and coloring pigments. Then pour into mold to achieve a dense texture, similar to natural cut stone. It is available in any color and can look like limestone, brownstone, bluestone, granite, slate, travertine or marble. It can match terra-cotta or brick and makes a perfect substitute for brick shapes. Cast Stone’s appearance is improved by weather, year after year. 

Precast Concrete is best used in none visible areas, where the appearance of air voids and surface irregularities is not an important consideration. Precast concrete is ordinarily made combination of sand, dark color gravel, pebbles, rock, and cement. All of which is poured into a mold where gradation of aggregates is not so important. After several years of weathering, the dark aggregates will begin to show. 

Architectural Precast Concrete is best suited for projects where the appearance is not important and is usually used in the form of large curtain wall panel units or large spandrel members. Large aggregates of various colors mixed with a wet slurry of sand and cement is use then poured into the mold. The surface has exposed the aggregates, resulting in a pebbly-with-voids type of finish. 

Precast concrete is less costly to manufacture because aggregates cost less and no surface finishing is required. Due to weathering there is a definite advantage in using Cast Stone rather than precast concrete.

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CAST STONE VS. NATURAL STONE

March 24, 2020
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There are several factors to consider when choosing stone materials for new construction, remodel, restoration or repair/replacement. Budget, and Aesthetic look, are important factors to consider when choosing between natural stone or cast stone. Natural material is quarried and delivered to the site, while cast stone is a man-made material. Natural stones come with variations in color and grain pattern while cast stone can replicate natural stone it can also be versatile and have color and pattern consistency or customize.  Even though natural stones are relatively strong and durable, Cast stone is stronger, less brittle, and can have PSI versatility. The cast stone strength can be modified depending on the use and method of casting.

Another major difference is the cost difference. Natural stone cost can significantly varies depending on market conditions, quarry location, contractor’s markup, and contractor relationship with the stone manufacturer that can make natural stone more expensive. While cast stone is typically more cost effective than natural stone, there are also factors that accounts for cast stone cost such as the number of molds that are required for each project. A new mold must be made each time a different shaped stone is cast. The type of mold use and the different type, thickness, and intricacy of cast stone can also add to the cost. There are also repair cost difference between cast stone and natural stones. For instance, natural stones can be difficult to repair or replace. Also, natural stone cannot be tinted to a desired shade and it is difficult to find another natural stone to match the existing natural stone. Whereas, cast stone repairs or replacement can be performed more easily and can also be easily fabricated with color or stained to the desired color shade.

Ultimately the choice between natural and cast stone often comes down to the clients or customers preference and budget.

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WHAT IS A CAST STONE

March 24, 2020
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Cast stone or reconstructed stone is a concrete masonry form of artificial stone that simulates natural cut stone used in unit masonry applications. Cast stone is an excellent replacement for natural cut limestone, brownstone, sandstone, blue stone, granite, slate, coral, travertine, and other natural building stones as well as terra-cotta. It is used for architectural features: trim, or ornament; facing buildings or other structures; statuary;  garden ornaments. Cast stone can be made from white and/or grey cements, manufactured or natural sands, crushed stone or natural gravels, and colored with mineral coloring pigments to achieve the desired color and appearance while maintaining durable physical properties which exceed most natural cut building stones.

Brief History of Cast Stone:

The earliest known use of Cast Stone dates about to the year 1138 and extensively used in London in the year 1900 and have gained widespread acceptance in America in 1920.

Today, Cast Stone have become a truly superior alternative to natural stone product. Its versatility and ability to simulate or reproduce almost limitless variety of natural stones combined with strength and weathering qualities, and ability to replicate with consistency makes cast stone an ideal material for building, remodeling, and restoration.

Additional information is available on link pages. Organizations such as the Cast Stone Institute (http://caststone.org/) and the AIA (https://www.aia.org/) will further provide more detail information on Cast Stone and its process.

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A Standard Blog Post

March 24, 2020
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WELCOME TO OUR NEW WEBSITE

The wait is over! Our New Website is user friendly and our customers can now order all our products online. Please browse and enjoy our new website. Let us know if there is anything, we can help you with. If you an idea that is not on our website, give us a call or email us, we can certainly help you with your custom order.

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