Why is the Polished Exposed Aggregate method more expensive?

Understanding the Polished Exposed Aggregate Method

Concrete floors are taking Auckland by storm, combining both durability and aesthetic appeal. Among the numerous finishes available, polished exposed aggregate flooring stands out. But it comes with a price tag. Let’s delve into why.

Delving into the Details

The polished exposed aggregate finish exposes the underlying stones by grinding the top layer of the concrete. It’s then polished for a shimmering finish showcasing diverse stone colours and patterns.

Reasons for the higher cost include:

  • Specialised Equipment: Concrete surface grinders, designed for this specific task, grind the concrete to reveal the aggregate. This intricate process requires experienced professionals.
  • Multiple Steps: After grinding, the aggregate undergoes several rounds of polishing using progressively finer pads.
  • Sealing: The final step is sealing the polished surface, preventing wear and stains.
  • Maintenance: Despite its durability, polished exposed aggregate needs regular maintenance to retain its sheen.

Costs Across Auckland

In Auckland, floor polishing costs differ depending on location. For instance, Mission Bay, known for its classic homes, may have older floor structures than the newer residences of Henderson. This can influence the polishing techniques and, consequently, the costs.

Here’s a breakdown of polished floors prices in NZ:

  • Basic Grinding & Sealing: NZD 70 per sqm
  • Full Mechanical Polish: NZD 150 per sqm
  • Polished Exposed Aggregate: NZD 190 per sqm

Navigating the Bylaws

In Auckland, specific bylaws dictate floor finishes, especially for heritage properties or when the process might affect neighbours. Additional consent costs combined with service charges can inflate the overall expense. Some suburbs under certain regional councils may have strict noise regulations, mandating the use of costlier, quieter machinery for floor polishing.

Making the Right Decision

Research is paramount before choosing a floor polishing contractor. Understand the method, the resulting finish, and its maintenance requirements. While polished exposed aggregate might be pricier upfront, its mesmerising finish could very well justify the expense.


Floor Finish TypeProsConsEstimated Cost (per sqm)
Basic Grinding & SealingDurable, QuickLess Aesthetic AppealNZD 70
Full Mechanical PolishHigh Shine, Long-lastingTime-consumingNZD 150
Polished Exposed AggregateAesthetically Superior, Unique FinishRequires Maintenance, More CostlyNZD 190

Frequently Asked Questions

What is the polished exposed aggregate method?

It’s a finishing technique where the top layer of a concrete surface is ground down to reveal the aggregate stones beneath, then polished to achieve a lustrous finish.

How does polished exposed aggregate differ from regular polished concrete?

While both methods involve polishing, polished exposed aggregate reveals the underlying stones for a diverse visual appeal, whereas regular polished concrete focuses on polishing the cementitious surface.

Is the polished exposed aggregate finish durable?

Yes, it’s known for its strength and longevity, although it may require periodic maintenance to retain its sheen.

Are there any bylaws in Auckland I should be aware of when choosing a floor finish?

Certain Auckland bylaws might dictate floor finishes, especially for heritage properties or if the process may disturb neighbours. It’s advisable to consult with the local council before proceeding.

How do costs vary between Mission Bay and New Lynnfor floor polishing?

Costs can differ based on the age and type of flooring structures present. For example, older homes in Mission Bay might have different requirements compared to newer New Lynnresidences, influencing the final price.

Why does the polished exposed aggregate method cost more than other methods?

The process is more intricate, often requiring specialised equipment, multiple rounds of polishing, and specific sealants to achieve the desired finish.

Do I need to seal polished exposed aggregate floors?

Yes, sealing is a crucial final step in the process. It protects the polished surface from wear and potential staining.

How often should I maintain my polished exposed aggregate floor?

Maintenance frequency depends on foot traffic and usage. Typically, homeowners opt for a professional touch-up every few years.

Are there any health and safety concerns with floor polishing?

Dust and particles can be released during the grinding process. It’s essential that professionals use appropriate safety gear, and spaces should be well-ventilated.

How can I find a reliable floor polishing contractor in Auckland?

Research online reviews, ask for referrals, and ensure your chosen contractor is familiar with local bylaws and regulations, especially concerning specific floor finishes.

Key Takeaways

Intricacy of the Polished Exposed Aggregate Method

This method reveals the underlying stones of concrete, giving it a distinct visual appeal. The technique requires specialized equipment and multiple rounds of polishing, leading to a higher cost.

Durability and Longevity

Polished exposed aggregate is lauded for its durability. With periodic maintenance, it can retain its lustrous sheen for a long time.

Auckland Bylaws and Regulations

It’s essential to be aware of local bylaws, especially if you reside in heritage properties or if the floor polishing process might disturb neighbours. Always consult with the local council before making decisions.

Cost Variances in Different Suburbs

Factors like the age and type of flooring, and the specific requirements of certain suburbs like Torbay and Henderson, can influence the final price of floor polishing services.

Importance of Sealing

To protect and prolong the life of the polished surface, sealing is a crucial step. It guards against wear and potential staining.

Health and Safety Concerns

The grinding process can release dust and particles, making safety gear and proper ventilation indispensable.

Finding the Right Contractor

Choosing a seasoned contractor familiar with Auckland bylaws and specific floor finishes can make all the difference in achieving the desired result.

Maintenance is Key

Depending on usage and foot traffic, homeowners should opt for professional maintenance every few years to keep the polished surface in top condition.

On the Clock: How Long Does It Take to Grind a Floor in Auckland?

Factors Influencing the Grinding Timeline

How long does it take to grind a floor? A simple question, yet it elicits a complex answer. The time it takes to complete floor grinding in Auckland largely depends on multiple factors:

Floor Area: The size of the surface to be ground plays a pivotal role. Bigger spaces will invariably take more time to finish.

Floor Condition: A floor with more bumps and irregularities requires a more in-depth grinding process.

Desired Finish: The level of smoothness or polish desired can extend the time, as achieving a high gloss finish involves additional grinding and polishing stages.

From One Auckland Suburb to Another

The timeline of grinding a concrete floor might also fluctuate based on the locality within Auckland. In heritage-rich suburbs like Ponsonby, working around older structures might require additional precautions and thus extend the time. On the other hand, newer residential areas such as Albany could offer less complicated projects and shorter completion times.

Safety Protocols and Time Management

Auckland’s rigorous health and safety guidelines impact project timelines. Adherence to correct usage of personal protective equipment (PPE) during the grinding process, given the dust and noise generated, is not just a necessity but a mandate. These safety protocols, while ensuring worker safety, could add extra time to the project.

Council Bylaws: Timekeepers of the Project

Navigating Auckland’s council bylaws might affect the timeline. For example, certain suburbs, such as North Shore, might have noise restrictions during specific hours, influencing work schedules and thereby affecting the project duration. Consulting with a professional concrete grinding contractor helps plan for these regulations, ensuring a timely project conclusion.

Environmental Considerations: A Conscious Approach

Incorporating environmental-friendly practices into the grinding process may also influence the timeline. Opting for wet grinding over dry methods can mitigate dust pollution, but the process could add to the time taken. However, the resulting benefit to the environment makes it a worthy trade-off.

The Grinding Timeline: A Cost Perspective

Assessing the time required to grind a concrete floor in Auckland necessitates an understanding of the cost involved. Despite potential time constraints due to health and safety requirements, bylaw compliance, and environmental considerations, the durability and aesthetic appeal of a professionally ground and polished concrete floor validate the investment of time.

In Summary

Grinding a concrete floor is a meticulous process, and its timeline depends on various factors. However, no matter the time involved, the transformation of a rough concrete surface into a smooth, polished floor often proves worth the wait. Always remember to engage professional floor grinding services to ensure quality work, timely completion, and adherence to all safety and environmental guidelines.