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NON-EXPLOSIVE Rock Breaking Services in NZ

DXG are partnered with a high-quality supplier of expanding grout products for both product supply and application.

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OVERVIEW

DXG are New Zealand’s trusted provider of non-explosive rock breaking solutions, including expanding grout supply and application. As the exclusive Australasian distributor of Rock X and Rock XL expanding grout products, we help contractors, councils, and developers carry out safe, silent, and eco-friendly rock removal in sensitive or restricted blasting environments.
 
We also provide mechanical rock breaking systems for projects requiring immediate or highly controlled results. From trenching in residential zones to excavation near hospitals, DXG ensures precise, compliant, and low-impact rock breaking solutions nationwide.

NON-EXPLOSIVE ROCK BREAKING – Expanding Grout

Expanding grout is a safe, vibration-free alternative to blasting, designed for projects where explosives are restricted. Once poured into pre-drilled holes, the grout expands under immense pressure, silently fracturing rock or concrete.
 
Applications for Rock X & Rock XL expanding grout:
  • Urban construction sites near homes or businesses
  • Hospitals, schools, and other noise-sensitive areas
  • Heritage buildings and rail corridors
  • Trenching and excavation in confined zones
  • Remote locations where explosives aren’t permitted
Advantages of expanding grout:
  • Silent, vibration-free rock breaking
  • No blasting permits required
  • Safe for use near underground services and structures
  • Eco-friendly and low dust generation
  • Cost-effective for small or sensitive projects
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MECHANICAL ROCK BREAKING

For projects needing faster or highly controlled removal, DXG also provides mechanical rock breaking systems. These solutions are ideal for certain rock types and site conditions, where mechanical force offers quicker, targeted results.
 
DXG can advise on whether mechanical or chemical methods are best suited to your project and deliver the equipment and expertise needed for safe execution.
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Rock Breaking in Sensitive Zones

Our team are specialists in controlled rock removal for high-sensitivity areas, including:
 
  • Hospitals and schools
  • Dense urban and residential zones
  • Heritage precincts
  • Rail corridors and transport hubs
We provide full on-site assessment, technical advice, and product application to ensure minimal disruption and full compliance with local regulations.

Why Choose DXG for Rock Breaking?

  • Exclusive distributor of Rock X and Rock XL expanding grout
  • Experienced in both chemical and mechanical breaking methods
  • Full product supply and application services available
  • Proven expertise in sensitive and urban environments
  • Nationwide service with technical support

FAQ

Chemical rock breaking uses expanding grout compounds (such as Rock X and Rock XL) that, when mixed with water and poured into pre-drilled holes, generate expansive pressure as they cure. This pressure fractures the rock safely, silently, and without vibration, making it ideal for sensitive or regulated environments.

Rock X is formulated for small-diameter holes (under 50mm)

Rock XL is designed for larger-diameter holes (76–102mm)

Both products are engineered for use in non-explosive rock removal, but selection depends on hole size and site conditions.

Mechanical breaking is ideal when:

• Immediate splitting is required

• Depths up to 5ft need to be addressed

• Hole diameters are 100mm or 150mm

• Projects demand controlled, directional force and high break-out strength (300+ tonnes)

Yes. Expanding grout causes no vibration, no flying debris, and produces minimal noise, making it exceptionally safe for work near:

  • Structures
  • Utilities
  • Property boundaries
  • Sensitive receivers (like hospitals, schools, or heritage sites)

Expanding grout works effectively on:

  • Hard rock (e.g., granite, basalt)
  • Medium rock (e.g., limestone, sandstone)
  • Even reinforced concrete when drilled appropriately. The effectiveness depends on hole placement, depth, and site temperature—DXG provides expert advice on all of these.

No. One of the major advantages of chemical rock breaking is that it does not require blasting licenses or explosive permits, greatly simplifying project approvals and timelines.

DXG offers both:

  • Direct supply of Rock X, Rock XL, and mechanical splitting systems
  • Full-service solutions, including onsite assessments, hole drilling coordination, and grout or mechanical system deployment

In many cases, rock can be broken right up to property boundaries or sensitive assets, depending on the site. All works are subject to site-specific risk assessments and compliance reviews, which DXG can assist with.

Expanding grout is non-toxic, non-explosive, and produces no harmful emissions or loud noise.

It’s considered a low-impact, environmentally friendly alternative to blasting.

Simply contact our team via phone or email. We’ll help you determine the right solution based on your project requirements, site conditions, and compliance needs.

Yes – Rock X and Rock XL is available in 3 different variations for differing ground temperatures from -5c to over 30c.

Need a safe, non-explosive rock removal solution?

DXG supplies and applies expanding grout and mechanical rock breaking systems across NZ

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