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SERVICES:

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Concrete Restoration and

Diamond Refinishing

 

 

DelGrosso Design is your preferred company for all types of concrete floors, from restoration and refinishing of old cement and concrete slabs to high-quality Diamond Polishing of new floor slabs.

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Our Advantages

 

We strive to achieve the expected result and often exceed it by combining:
 

  • decades of experience

  • impeccable work ethic

  • technical expertise

  • and honest pricing

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Our Location

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Based in Sonoma County, located in the spectacular Valley of the Moon, in the heart of the Wine Country, we pride on our integrity, excellent craftsmanship, and unique design style.

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Service Area

 

For more than two decades, DelGrosso Design has produced hundreds of unique and beautiful Projects throughout the San Francisco North Bay.

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Management

 

The company was founded in 2004 by Andrea DelGrosso, after more than a decade of business in Lake Como, Italy, where he was born and raised. He learned his trade from his father, a teacher, and his grandfather, a stone mason.

USEFUL LINKS:

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Easy Ordering

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In the last decade, Polished Concrete has become one of the most important and sought-after finishes in the high-end flooring industry.

 

DelGrosso Design specializes in

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  1. Residential diamond refinishing

  2. Light commercial diamond refinishing

 

Our process produces incredible durability and beauty, trendy style, and offers total customization.

 

To inquire about your flooring options click the Estimates link and quickly connect with us. We love our clients and we enjoy working together on their projects.

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Work Process

Refinishing a concrete slab by diamond abrasion is a very skilled trade that requires years of experience and technical expertise.

 

While commercial slabs typically do not require high attention to detail, residential projects are all about details, planning, sampling, and creating the right expectations. That's where we excel!

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Refinishing a concrete slab includes 3 main steps
 

  1. Grinding the surface for preparation

  2. Performing necessary repairs and detailing

  3. Honing (low reflectivity finish) or polishing (higher reflectivity finish) and sealing/burnishing
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Every slab is different, as much as every client is different, so we strive to listen and understand your needs with diligence, determine options and a plan of action, and create the proper expectations, so you know before starting what can be achieved.

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Benefits of Polished Concrete

Diamond polished concrete and diamond polished cement overlays are among the most durable and beautiful floors on the market.

 

Delrosso Design produces surfaces that are:

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  • extremely resilient

  • virtually scratch-dust-mold resistant

  • very easy to maintain, clean, and sanitize

  • providing excellent slip resistance, even in wet conditions
     

You might see polished concrete in a shopping center floor, or a church, hospital, hardware store, school, and many other public spaces, and think, "How nice it would be to have something similar in my house". Now you can!

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We personalize polished concrete, making it extremely attractive, trendy, stylish, with colors and shapes that make your neighbors and friends say "wow"!
 

Contact us to schedule a consultation.

Pool Decks Restoration

Over the decades, DelGrosso Design perfected a superior restoration system for concrete pool decks. So often, those concrete areas around pools are worn out and beaten up, as they corrode faster than any other concrete areas around your house.

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Don't worry, that's pretty typical, as it is so hard to properly maintain concrete around pools.

The system that we developed will
 restore your surfaces, making them very durable, beautiful, and slip-resistant, easy to clean and maintain, and soft on your feet!

 

In this way, you will be able to enjoy your backyard area without stress, and entertain family and friends with no worries on your mind.
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Check out the Testimonials page, where our clients often spontaneously express their gratitude for our hard work when we exceeded their expectations.

Choosing Concrete Slab vs Cement Overlay

Cement is one of the components in concrete. It is a fine powder that binds the other ingredients through a process called "hydration". In addition to cement, concrete contains stone aggregate, which, once exposed during the initial grinding phase, creates the classic "salt and pepper" look of polished concrete.

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If a slab is not in conditions suitable for direct refinishing, a cement overlay (we also call it "topping") can be applied to create a brand new surface.

 

 

The polishing process and floor performance are virtually identical on both cement and concrete, although the processes are different in specifications and installation sequence. Several types of diamond polished cement overlays are available, so we can create unique tones and designs.

 

 

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© 2025 by DelGrosso Design

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