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Epoxy Resin Aggregates

A quarry is shown with sloping, jagged edges and large stone boulders scattered around.
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Quality Control 101: What Is a Sieve Analysis and Why Does It Matter?

When selecting aggregate for commercial use, there are a number of tests the product goes through to evaluate its suitability for a certain application. Among these tests is a sieve analysis. A sieve analysis helps companies to evaluate aggregate for use as a quality product in pathway mixes, architectural and decorative precast concrete, epoxy resin…

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Wisconsin Natural Stone

Kafka Granite began in 1979 when Wisconsin native Glenn Kafka bought a backhoe at a local auction and started laying tile for local farmers. Shortly thereafter, he took advantage of an opportunity to purchase a granite pit and found himself taking his next steps toward a multifaceted natural stone company. Flashing forward to the present…

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Specialty Aggregate Colors

A Simple Guide to Kafka Granite’s Commercial Offerings

From specialty crushed stone in over sixty different colors for manufacturing, to beautiful multi-colored, naturally round granite boulders for landscaping, Kafka Granite is one of the largest and most specialized producers of landscape and architectural aggregates. Having been a leading and established supplier of granite, quartz, marble and recycled materials for over three decades, many…

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Kafka Architectural Aggregates Color Chart
Kafka Architectural Aggregates Color Chart

How Does Natural Stone Get Its Color?

No two pieces of natural stone look alike—even if you’re comparing two pieces of granite extracted from the same quarry. This variation of color, pattern, and texture is part of what makes natural stone so unique and so highly prized as a building and landscaping material. If you’re on the lookout, you’ll notice it in…

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Scientists work with scales and distilled water to test the absorption and bulk specific gravity of dimension stone.

Quality Control 101: What Is Specific Gravity?

So far, in our quality control series, we’ve discussed Mohs hardness and absorption—but there are still many other factors that play a role in creating specialty aggregates, natural thin stone veneer, and other products that will last. Today, we’re diving into the importance of specific gravity and bulk specific gravity in stone. Let’s take a…

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The Kafka Granite logo is imposed on top of a cloudy image of a front porch featuring Kafka's Thin Stone Veneer.

Quality Control 101: What Is Absorption?

Here at Kafka Granite, we’re dedicated to providing high-quality stone products—but that’s not the only thing that makes us an industry leader. Our dedicated team is constantly seeking out colorful new deposits and developing innovative uses for natural stone and products to meet the ongoing needs of our customers. We’re also happy to share our…

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Moh's Hardness Test Example
Moh's Hardness Test Example

What Is Mohs Hardness?

We’ve touched on the importance of quality control in stone products before—after all, consistency is critical throughout the process of manufacturing precast concrete aggregates and other specialty natural stone materials. Today, we’re diving even deeper into one of the factors that contribute to a stone’s inherent quality: Mohs hardness. Here’s some information on the history…

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A digger and dump truck work to load up some natural stone in a small quarry.

The Geology of Natural Stone

Designers, architects, and stone masons get to see quite a variety of stone products, from specialty aggregates to natural stone veneer. Even more people get to see the end results of Kafka Granite’s products—in the form of building facades, bridge overpasses, golf cart pathways, and more. But have you ever wondered about where that stone…

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A snow-covered quarry is shown with a digger and dump truck in the foreground.

The Unique Geology of Wisconsin

Though Kafka Granite sources stone from quarries across the continent, we’re proud to call Wisconsin our home—and the wellspring of many of our beautiful products. But what, exactly, makes this great state the perfect spot for our business?  Essentially, it’s all in the geology of the area. We’ve put together an overview of the thousands…

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Photo courtesy of Unilock
Photo courtesy of Unilock

4 Recycled Crushed Materials to Start Using in Your Design

Kafka Granite has always taken measures to help the environment. After all, we pride ourselves on the environmental benefits of naturally occurring decomposed granite in comparison with concrete or asphalt. Permeable paver grit, which contributes to groundwater recharge, and white roof options to reduce urban heat islands contribute to our portfolio of eco-conscious aggregates. Using…

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