Exposing Aggregate with Concrete Sandblasting

WASP Blasting in Melbourne’s premier choice for professional exposed aggregate services.

Our specialised technique of sandblasting concrete to reveal the hidden beauty of aggregate beneath offers a unique blend of aesthetic appeal and durability.

Ideal for both residential and commercial properties, exposed aggregate surfaces not only enhance visual interest but also provide long-lasting solutions that withstand the test of time and weather.

Our Exposed Aggregate Services

Our Exposed Aggregate sandblasting is a decorative form of concrete finish where we remove the top layer of cement paste to uncover the earthy beauty of pebbles, crushed stone, or other materials embedded within.

By using abrasive blasting (commonly known as sandblasting) or grit blasting, our process exposes the aggregates within the hardened concrete. It erodes the surface layer by which it offers a rustic and attractive look to the concrete surface.

exposing aggregate examples

Why Choose WASP Blasting for Exposed Aggregate

Expertise and Experience

We’ve been providing exposed aggregate sandblasting services in Melbourne since the 1980s, leveraging extensive experience to deliver high-quality results.

Advanced Technology

We use the latest wet abrasive blasting systems to expose aggregate, which are more effective and environmentally friendly than traditional methods.

Fully Licensed and Insured

We are fully compliant with all local regulations, giving you peace of mind when you choose our exposed aggregate service.

Environmental Commitment

We commit to eco-friendly practices, focusing on dust containment and waste mitigation, ensuring that our processes are safe and sustainable.

Types Of Aggregate That We Can Expose Through Blasting

exposed aggregate comparison on a concrete tile

The type of aggregate we can expose through sandblasting depends on what was mixed into the concrete in the first place. This can be:

  • crushed granite
  • quartzite
  • pea gravel
  • recycled glass
  • marble chips
  • crushed stone
  • or even gravel

Here are a few methods we use to determine what aggregate was used in your concrete:

1. Visual Inspection: We take a close look at the existing concrete surface. Sometimes, you can get a good idea of the aggregate type by its visual characteristics, such as:

  • Colour: Granite tends to be multicoloured with flecks, while quartzite is more uniform.
  • Size and Shape: Pea gravel is round and smooth, while crushed stone is angular and irregular.
  • Polished Finish: If the concrete has a polished surface, we might be able to see the inherent colour and texture of the aggregate better.

2. Test Patch: We can sandblast a small, inconspicuous area to see how the existing aggregate exposes. This can give us a good idea of the final look before committing to the entire project.

Our Process of Exposing Aggregate

At WASP Blasting, we meticulously prepare and execute the abrasive blasting process to expose the aggregate:

1. Area Preparation

WASP Blasting starts by thoroughly preparing the area to ensure that all surfaces are clean and adequately protected. This step minimises damage to surrounding areas and ensures that the sandblasting process is focused solely on the intended surfaces.

2. Blasting Process

Utilising state-of-the-art wet abrasive blasting technology, we carefully remove the top layer of concrete without harming the underlying aggregate. This precision helps maintain the integrity and aesthetic of the aggregate.

3. Finishing Touches

After the aggregate is exposed, the team conducts a comprehensive cleaning to remove any residual blasting material and dust. They then apply finishing treatments that enhance the durability and appearance of the aggregate, providing a polished and professional final look.

4. Safety Measures

Throughout the process, WASP Blasting adheres to strict safety protocols and environmental standards. This commitment ensures the health and safety of both the workers and clients while also minimising environmental impact.

Exposed Aggregate Blasting For Various Surfaces

We can Expose Aggregate using blasting on various surfaces in both residential and commercial settings, enhancing the aesthetic appeal and functionality of the spaces.
Some of them include:

Residential Settings:


A popular choice for its durability and appealing look that complements home exteriors.

Walkways and Sidewalks

Enhances the path to and around the home, offering slip resistance and a unique finish.


Ideal for outdoor living areas, providing a durable and attractive surface for entertainment spaces.

Pool Decks

Exposed aggregate provides a slip-resistant texture and can withstand constant water exposure.

Garden Paths

Adds a decorative touch to garden areas while being practical for regular foot traffic.

Steps and Staircases

Ensures safety with a non-slip surface and adds visual interest to exterior steps.

Garage Floors

Offers a tough and durable surface that can handle vehicle weights and resist oil stains.

Commercial Settings:

Office Building Entrances

Creates a professional and polished first impression with durable surfaces.

Shopping Centers and Retail Storefronts

Enhances aesthetic appeal to attract customers, while providing a durable walking surface.

Public Walkways and Plazas

Suitable for high foot traffic areas, offering durability and low maintenance.

Parking Lots

Provides a hard-wearing surface capable of handling heavy vehicular traffic.

Hotel and Resort Pool Decks

Ensures a safe, non-slip surface for guests while offering aesthetic appeal.

Restaurant Patios and Outdoor Seating Areas

Creates an inviting atmosphere that is also practical for high-use dining areas.

Hospital or Institutional Pathways

Offers a durable surface for areas that see a lot of pedestrian traffic and needs to be easy to clean and maintain.

Benefits of Exposing Aggregate

Aesthetic Appeal:

It provides a decorative finish that enhances visual interest and diversity in design. Exposed aggregate reveals the natural textures and colours of stone within the concrete, making each project unique.


Exposed aggregate surfaces are highly durable and resistant to harsh weather conditions and heavy traffic, making it ideal for both residential and commercial applications.

Slip Resistance and Weather Resistance:

The textured finish provides excellent slip resistance, making it ideal for outdoor applications.

Low Maintenance:

These surfaces require minimal upkeep compared to other decorative surface techniques. They are less prone to damage and easy to clean.

Customization and Additional Services

In addition to our standard exposed aggregate services, we also offer advanced customization options for those seeking a more tailored appearance.

With our Concrete Stencilling services, you can choose from a variety of designs and patterns to enhance your project's uniqueness.

This option is perfect for clients who wish to integrate specific aesthetic details into their exposed aggregate surfaces.

Our Exposed Aggregate Service - Your Questions Answered

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We're ISO Certified

ISO certification certifies that a management system, manufacturing process, service, or documentation procedure has all the requirements for standardization and quality assurance.

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