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APRIL 3, 2014
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New Concrete Aggregate Glows in the Dark

Glow-in-the-dark aggregate

To give your exposed-aggregate countertop finishes nighttime drama, these special glow-in-the dark aggregates from from Ambient Glow Technology absorb and store natural and artificial light and then release that light after dark. The aggregates can be used the same way other decorative aggregates are used and come in three color choices and a variety of sizes. In addition to kitchen countertops, popular applications include bartops, bathroom sinks and vanities, and outdoor concrete countertops. Learn more.

SInk with glow aggregate

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Five Popular Finish Options for Concrete Countertops   

Pseudo-slate finish

Part of the appeal of concrete countertops is the wide range of surface finishes that are possible, from mirror smooth to stone-like textures. Some countertop fabricators use the surface of the form itself to impart the finish, reproducing its texture in the concrete. Others will trowel the concrete surface to produce unique hand-crafted textural effects. The concrete can also be polished after it's cast to achieve ultra-smooth, seamless surfaces. Polishing is also used to expose decorative aggregate, glass, or stone within the concrete, resulting in terrazzo-like finishes. Here are examples and design ideas for all of these popular finish options.

Jim Peterson,
The Concrete Network
Marbelized finish

Marbelized or Veined Finish

There are several ways to make concrete countertops look like high-end granite or marble. Some contractors use specialized prepackaged concrete mixes to achieve distinctive veining effects. Similar results can be achieved by hand packing the concrete into the form, using contrasting colors to create the veining. Veined finishes can also be produced by casting voids into the concrete and then filling them in later with colored grout. See these examples:

Custom Concrete Countertops Resemble Appalachian Stone 

GFRC Admixture System Creates Beautiful Marbelized Countertops 

Special-Effects Countertops 

Wood-grained finish
Wood-Grained Finish

Wood-grained finishes can easily be achieved in concrete by using a technique called board forming,which involves casting the concrete in forms lined with real wood planking or wood-grained form liners. The roughness of the unfinished wood imparts a distinct wood-grain texture in the concrete surface. See these examples:  

Concrete Goes Back to the Ranch  

Concrete Table Mimics Reclaimed Wood 



Hand-troweled finish

Hand-Troweled Finish

Hand troweling the countertop surface rather than casting it against a form allows you to create a variety of textural effects, ranging from smooth to roughened. These finishes often look like natural stone because they are more variegated and have greater depth. Here's a variety of hand-troweled looks:

Old-World Countertops 

Pseudo-Slate Countertop 

Concrete Island Warms Up a Contemporary Kitchen 


Polished finish

Polished Finish 

Polishing or sanding concrete countertop surfaces after they're cast results in a smooth, flawless finish. The gloss level can range from low luster to ultra-shiny, depending on the degree of polishing. For ultra-smooth polished surfaces, cast the countertop in one piece to eliminate seams.

A Concrete Countertop Captain Ahab Would Love  

Exposed aggregate

Exposed-Aggregate Finish 

Some of the most unique and dramatic concrete countertop finishes can be created by exposing the aggregate. The process begins by seeding the concrete countertop mix with pieces of decorative colored stone or glass. After the countertop is cast, going over the surface with a grinder will expose the aggregate and give it a gem-like luster.
Countertops Are Personalized with Colored Glass
Concrete Bartop Enhances Upscale Tavern