How to Specify: Terrazzo Flooring

22 Jul.,2024

 

How to Specify: Terrazzo Flooring

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Terrazzo. The word just sounds fancy.

&#;What material should we make the floor? Stone? Wood?&#;

&#;What about &#; terrazzo?&#;

Listen to the way the word rolls off the tongue. C&#;mon, it&#;s impossible not to say yes to that!

Commercial work-space designed by Cordero Atelier with terrazzo flooring by Dzek, Madrid, Spain; photo by Antártica Estudio

As its name suggests, terrazzo originated in Italy, where marble-workers would take the crumbs of their work home, mix them with cement and create faux-stone floors for their terraces. Since then, terrazzo floors have grown into an art form all their own with a wide range of styles and possibilities. Classic terrazzo is a mixture of marble fragments, called the aggregate, and a cementitious binding agent, called the matrix. It is resilient and can be used inside and outside, and it can be cast in place or laid in manufactured tiles.

More recently, terrazzo manufacturers have used epoxy for the matrix, which is lighter and easier to work with and can be much thinner than traditional cement. Many have also experimented with non-marble aggregates, including recycled materials like glass or metal scraps. After it was introduced in the 20th century, epoxy terrazzo came to dominate the market and became a cost-effective flooring used throughout institutional buildings. There&#;s a good chance your old high school or office building has epoxy terrazzo somewhere in its halls.

In the 21st century, terrazzo flooring has had a renaissance as architects have looked for new ways to work with natural and recycled materials. The playful graphic effect of large aggregate terrazzo has come into style as designers take inspiration from retro Memphis Group&#;inspired looks.

Nara Terrazzo Side Table by Shiro Kuramata for Memphis, ; image via Pamono

We talked to Joshua Boncosky of Concord Terrazzo Company and Cameo Morningstar from Terrazzo & Marble Supply Companies about what architects need to know when considering or specifying terrazzo floors. They helped to break it down to the basics.

Epoxy or Cement?

The first big decision you need to make when selecting terrazzo flooring is whether or not you want to go with a traditional cement matrix or with the new standard, epoxy. &#;Today, about 90 percent of terrazzo being installed is epoxy-based,&#; said Boncosky. &#;The design flexibility, speed of install, the introduction of crack suppression membranes and overall weight of epoxy terrazzo&#; make it a popular choice. Epoxy can also be created in any color the designer wants.

Still, Boncosky said, &#;Cement terrazzo is great for exterior applications and some renovation projects where there is not an active vapor barrier beneath the slab.&#; Moisture can interfere with how epoxy binds to its base, which is why cement terrazzo generally is used in outdoor installations. Even indoor concrete slabs can be difficult if there is not enough vapor protection. &#;If an old slab is very &#;wet,&#; it could cause issues with the terrazzo bonding to the slab,&#; Boncosky said. &#;Oftentimes, the discovery of the absence of a vapor barrier comes too late in the construction process and can cause issues. If an architect wants to apply epoxy terrazzo to an old slab, make sure the slab is acceptable.&#;

If you do want cement, make sure you have a skilled contractor. Because it&#;s relatively rare, &#;very few skilled tradesmen are doing cement terrazzo,&#; Morningstar said.

Kitchen and dining room for a Brussels townhouse by Victoria-Maria Interior Design with terrazzo tiles by Dzek; photo by Tim Van de Velde

Precast or Poured-in-Place?

&#;Poured-in-place terrazzo is one of the most durable floor systems you can purchase on the market today,&#; Boncosky said. &#;One of the benefits of having poured-in-place terrazzo floors is that the terrazzo is monolithically bonded to the substrate. When terrazzo is bonded to a slab, the concrete substrate will break before the bond between the slab and terrazzo breaks. Poured-in-place terrazzo also creates a seamless floor system, which is easier to maintain when compared to a tile floor with grout joints.&#;

Keep in mind, however, that poured-in-place floors need to be ground and finished on-site and will require experienced tradespeople; that makes them more expensive and time-consuming. &#;Smaller projects may choose to go with terrazzo tile just based on budget and ease of installation.&#; Concord Terrazzo, along a variety of other manufacturers, can produce a variety of tile options. Precast terrazzo tiles can be installed similarly to ceramic or stone tile. Like poured-in-place slabs, they can easily be designed in custom colors and patterns and are not limited to off-the-shelf products.

Section assembly diagram from Concord Terrazzo Company

Poured slabs generally are &#; of an inch thick, though this can vary, and slabs should be poured over a concrete base; they can also be poured over older terrazzo slabs. The slabs need to be ground and polished after curing, and the process requires specialty contractors to be done well.

Valentino Man store by David Chipperfield Architects

The Valentino Look: Palladiana and Venetian Terrazzo

Morningstar pointed out that the recent surge in terrazzo interest stems from the Valentino stores designed by David Chipperfield. &#;The Valentino stores really put terrazzo back in the forefront.&#; Those stores use two specialty types of terrazzo that are widely available but will require a little more attention (and money).

The floors use palladiana terrazzo, which uses chunks of marble slab in the aggregate rather than small rocks. This creates the paver-like effect. The walls use Venetian terrazzo, which is the term for mixtures that use larger rocks than usual in the aggregate. Both give a more graphic effect than typical small-aggregate terrazzo, and because both palladiana and Venetian terrazzos are more expensive, they create a more rarefied look.

Aggregate Size

Terrazzo aggregate is graded according to its size regardless of the material. The scale ranges from 00 at the smallest and all the way up to 5 or 6 for the largest. Typical terrazzo uses 0 to 2 aggregate sizes, which range from 1/16 to &#; of an inch in diameter. Latest trends are on either ends of the spectrum. Morningstar says, &#;Micro terrazzo is where we&#;re using 00 and 0. It has more of the polished concrete look,&#; and trendy Venetian uses the largest aggregates available. Larger aggregates will generally have more variety in overall appearance.

Terrazzo aggregate scale; image via Eco Safety Products

Keep in mind that a typical terrazzo floor is only &#; of an inch thick, so if you&#;re using aggregate larger than that, you will have to do an unusually thick slab, which is more expensive and will have to be coordinated with surrounding finishes. Venetian floors can get up to ½ of an inch thick. Smaller aggregates means thinner terrazzo and cheaper floors, which is why many institutions use 0 to 2 aggregate size. Terrazzo floors can be as thin as ¼ of an inch, but that means the aggregates must be size 1 or smaller.

While there aren&#;t typically any performance issues with unusually large or small aggregate, Morningstar pointed out that with &#;large glass chips in a black epoxy, you can have issues with point loads &#; high heels can fracture them. In a light color epoxy you would never notice, but with a dark epoxy, you will see it.&#; Generally, it&#;s not an issue, but if you want to really impress (or annoy) your contractor, you can bring it up.

Mother-of-pearl aggregate from Concord Terrazzo Company

Aggregate Material

The most traditional terrazzo uses Italian marble for the aggregate, but today North American marble is common, and almost any other material can be used instead. &#;Aggregates like recycled glass, recycled porcelain and recycled concrete are being specified quite regularly as these aggregates can contribute LEED Points,&#; Boncosky said. &#;Natural aggregates are also being specified that are sourced and processed within 500 miles of the project site.&#; Glass, shells or even metal shavings can be used if you&#;re after something unusual.

Dividers

Poured-in-place terrazzo, like concrete, can only span limited distances before cracking. Cement-based terrazzo can only span 3- to 5-foot squares, whereas epoxy-based terrazzo can go much further, up to 20 or 30 feet in either direction. Cementitious terrazzo is generally divided in grids, whereas epoxy terrazzo can be divided in any pattern you like. Divider channels can be used as decorative inlays.

Dividers from Concord Terrazzo Company

The dividers themselves are typically metal &#; usually zinc, but occasionally brass or aluminum. Less frequently, they are made from black or white high-density plastic to blend in with the floors.

Keep in mind that you will have to have dividers in the terrazzo wherever you have joints in the concrete beneath. If you&#;re not sure where the seams will be in your concrete slabs, ask your contractor or engineer so you don&#;t have surprise dividers running through your beautiful terrazzo.

Cost and Planning

Terrazzo is great, but it can seem expensive, especially when it&#;s poured in place. Morningstar noted, &#;It often gets value-engineered out.&#; If you want to prevent that from happening, know what you&#;re paying for. Because poured-in-place terrazzo is installed and finished by specialty contractors, price estimates often include the cost of materials and installation. Stone or ceramic tile is generally priced at material cost so it can appear significantly cheaper.

Boncosky added that terrazzo floors often require a bit more planning than other materials. &#;The terrazzo process is fairly long due to the fact that every terrazzo floor is one of a kind. Colors must be first selected by the architect or designer. Once those colors are finalized, the terrazzo contractor must then procure the material for the floor. Depending upon what is in the specified terrazzo mix, there could be some extended lead times on certain products.&#;

Doing your homework will pay off in an elegant floor that will last a lifetime. As Morningstar put it, terrazzo is &#;the most beautiful blend of technology, performance and design.&#;

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The Ultimate Guide to Terrazzo Tiles: Everything You Need ...

Introduction to Terrazzo Tiles

Terrazzo tiles have become a popular choice in interior design, known for their durability, versatility, and unique aesthetic appeal. Made from a combination of aggregates such as marble, granite, and glass, these tiles offer endless design possibilities for residential and commercial spaces alike.

As a leading manufacturer in the tile industry, Skytouch Ceramic is here to provide you with the ultimate guide to terrazzo tiles. Whether you're a homeowner looking to renovate or a designer seeking inspiration, this comprehensive guide covers everything you need to know about terrazzo tiles - from their history and manufacturing process to their installation and maintenance. 

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Explore the world of terrazzo and discover why it's the perfect choice for your next project with Skytouch Ceramic.
 

Benefits of Terrazzo Tiles

Terrazzo tiles offer a myriad of benefits that make them a popular choice for both residential and commercial spaces. Here are some of the key advantages of choosing terrazzo tiles for your next project:

Durability: Terrazzo tiles are known for their exceptional durability, making them perfect for high-traffic areas. They are resistant to scratches, stains, and wear, ensuring that your floors maintain their appeal for years to come.

Versatility: With countless color and design options, terrazzo tiles offer endless possibilities for creating unique and customized spaces. Whether you prefer a classic, minimalist look or a bold, vibrant design, terrazzo tiles can be tailored to suit any style.

Easy Maintenance: Terrazzo tiles are relatively low-maintenance, requiring only regular sweeping and mopping to keep them looking their best. Additionally, they are resistant to moisture and are easy to clean, making them ideal for areas prone to spills and stains.

Eco-Friendly: Made from a combination of natural materials, terrazzo tiles are an environmentally friendly choice for your space. They are also highly durable, which reduces the need for frequent replacements, further minimizing waste.

In the following sections, we will delve deeper into each of these benefits and provide you with expert tips on how to make the most of your terrazzo tiles. Stay tuned for our next installment where we discuss the durability of terrazzo tiles in more detail.
 

Different Types of Terrazzo Tiles

Terrazzo tiles come in various types, each with its own unique characteristics and style. Understanding the different types can help you choose the perfect terrazzo tiles for your space. Here are three popular types of terrazzo tiles:
 

1. Venetian Terrazzo

This is the most traditional type of terrazzo tile, which originated in Italy. It consists of marble or granite chips set in a cement or epoxy resin matrix. Venetian terrazzo tiles are known for their timeless elegance, with a smooth finish and a wide range of color options available.
 

2. Rustic Terrazzo

Rustic terrazzo tiles offer a more textured and rugged look. They are created by embedding aggregates like crushed glass, quartz, or pebbles into the cement or epoxy base. These tiles are perfect for adding a touch of natural beauty and warmth to a space.
 

3. Seeded Terrazzo

Seeded terrazzo tiles incorporate larger aggregate materials, such as mother-of-pearl, precious stones, or even semi-precious gemstones. The result is a luxurious and glamorous flooring option that adds a unique visual appeal to any room.

When choosing the type of terrazzo tiles, consider the overall aesthetic of your space and the level of maintenance you are willing to put in. In the next section, we will discuss the durability of terrazzo tiles in more detail, helping you understand why they are such a long-lasting flooring option. Stay tuned!
 

How to Choose the Right Terrazzo Tiles for Your Project

When selecting terrazzo tiles for your project, there are several factors to consider. First, determine the style and aesthetic you want to achieve. Each type of terrazzo tile has its own unique characteristics, so choose one that aligns with your vision. Consider the colors, patterns, and materials that will complement your space.

Next, think about the level of maintenance you are willing to commit to. While terrazzo tiles are generally low maintenance, some types may require more cleaning or sealing than others. Take into account your lifestyle and how much time you can dedicate to maintaining your flooring.

Lastly, consider the durability of the terrazzo tiles. This is an important aspect as terrazzo tiles are known for their longevity. Look for tiles that are resistant to stains, scratches, and wear. Also, consider where the tiles will be installed and choose ones that can withstand heavy foot traffic or specific environmental conditions.

By considering these factors, you can confidently choose the right terrazzo tiles for your project and create a beautiful and lasting flooring solution
 

Installation and Maintenance Tips for Terrazzo Tiles

Once you have selected the perfect terrazzo tiles for your project, it's important to ensure a proper installation and establish an effective maintenance routine. Here are some tips to help you with the installation and care of your terrazzo tiles.
 

1. Hire a professional installer: 

Terrazzo tile installation requires skill and expertise. It is highly recommended to hire a professional installer who is experienced in working with terrazzo. They will ensure the tiles are properly laid and the surface is level and smooth.
 

2. Seal the tiles: 

To protect your terrazzo tiles from stains, it is crucial to seal them. Consult with your installer or a specialist to determine the best type of sealant for your specific terrazzo tiles. Apply the sealant according to the manufacturer's instructions, and reseal periodically as needed.
 

3. Regular cleaning: 

Terrazzo tiles are relatively low-maintenance, but regular cleaning is still necessary to keep them looking their best. Use a non-abrasive, pH-neutral cleaner and a soft mop or cloth to remove dirt and grime. Avoid using harsh chemicals or abrasive cleaners that can damage the surface.
 

4. Preventative measures: 

Place doormats or rugs at entryways to prevent dirt and debris from scratching the terrazzo tiles. Use furniture pads or felt under heavy furniture to avoid scratching the surface when moving or rearranging.
 

5. Watch out for spills: 

Promptly clean up any spills on your terrazzo tiles to prevent staining. Blot the spill with a clean cloth or paper towel, and then clean the area with a mild cleaner.

By following these installation and maintenance tips, you can ensure that your terrazzo tiles remain beautiful and durable for years to come.
 

Popular Terrazzo Tile Designs and Patterns

When it comes to terrazzo tiles, there is an abundance of designs and patterns to choose from. These options allow you to customize your space and create a unique and stylish look. Whether you prefer a classic and elegant design or something more contemporary and bold, there is a terrazzo tile design out there for you.

One popular design is the traditional terrazzo pattern, which showcases a mix of colorful marble chips embedded in a plain or colored base. This pattern is timeless and adds a touch of sophistication to any space.

For those seeking a more modern look, geometric terrazzo designs are trending. These patterns feature geometric shapes, such as triangles or hexagons, arranged in a repetitive pattern. This design adds a contemporary and artistic flair to any room.

Another popular trend is terrazzo tile designs that mimic the look of natural stone, such as marble or granite. These designs replicate the beauty of natural stone while offering the durability and versatility of terrazzo.

No matter your design preference, terrazzo tiles offer endless possibilities to transform your space into a work of art.
 

Cost and Budget Considerations for Terrazzo Tiles

When it comes to remodeling or renovating, it&#;s essential to consider your budget before diving into any project. Terrazzo tiles come in a range of prices, making it important to find the right option that suits your budget.

Firstly, the cost of terrazzo tiles can vary depending on the quality of materials used. High-quality terrazzo tiles made with premium marble chips and a durable base can be more expensive than lower-quality options.

However, investing in high-quality tiles often pays off in the long run, as they tend to be more durable and resistant to wear and tear.

Additionally, the size and thickness of the terrazzo tiles can also impact the cost. Larger tiles and thicker tiles often come with a higher price tag due to the increased materials and labor required to produce them.

Lastly, it&#;s crucial to factor in the cost of installation when considering your budget. Hiring a professional to install terrazzo tiles can add to the overall cost, but it ensures a proper and long-lasting installation.

By taking these cost considerations into account, you can find a terrazzo tile option that not only meets your design preferences but also fits within your budget.
 

Frequently Asked Questions about Terrazzo Tiles


1. How do I clean and maintain terrazzo tiles?

Terrazzo tiles are relatively easy to clean and maintain. Regular sweeping and mopping with a mild detergent should be sufficient to keep them looking their best. Avoid using harsh chemicals or abrasive scrubbers, as they can damage the surface. It is also recommended to reseal the tiles every few years to maintain their shine and protect them from stains.
 

2. Are terrazzo tiles suitable for outdoor use?

Yes, terrazzo tiles can be used outdoors. However, it is essential to choose tiles specifically designed for outdoor use, as they are more resistant to weather conditions and have a specialized sealant to protect them from moisture and UV damage.
 

3. Can terrazzo tiles be used in high-traffic areas?

Terrazzo tiles are a popular choice for high-traffic areas due to their durability. They can withstand heavy foot traffic without losing their beauty and are resistant to scratches, stains, and wear.
 

4. How long do terrazzo tiles last?

With proper care and maintenance, terrazzo tiles can last for decades. Their durability and resistance to wear and tear make them a long-lasting flooring option.
 

Conclusion

By answering some commonly asked questions about terrazzo tiles, we hope we've provided you with a comprehensive guide to understanding and using this versatile flooring material. From learning how to clean and maintain terrazzo tiles to knowing if they are suitable for outdoor use or high-traffic areas, these answers will help you make informed decisions for your home or commercial project.

Terrazzo tiles offer a stunning combination of durability, beauty, and versatility, making them an excellent choice for a wide variety of applications. With proper care and maintenance, terrazzo tiles can last for decades, ensuring a long-lasting investment in your space.

Remember, while it is possible to install terrazzo tiles yourself, hiring a professional is recommended to ensure a level and secure installation. With their expertise and access to specialized tools, professionals can guarantee the best results.

In the next section of this guide, we will delve deeper into the various design options and styles available with terrazzo tiles, including color combinations, patterns, and finishes. So, stay tuned for more inspiration and ideas to elevate your space with terrazzo tiles!

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