What is polished concrete?
Polished concrete is a refined decorative finish created by mechanically grinding and polishing a concrete surface to achieve a smooth, glossy appearance. The process reveals embedded aggregates and can be customised to different exposure levels. Chemical densifiers are applied to harden the surface, and optional sealers enhance protection and shine. Boral’s premium mixes, including Boralstone®, are designed to deliver superior results across full polish, honed, and burnished finishes.
How much does polished concrete cost?
The cost of polished concrete depends on several factors, including the mix design, aggregate type, use of Colori® oxides, and the level of polish desired. While Boral supplies the concrete mix, polishing is performed by contractors, and installation costs vary based on location and complexity. Adding Colori® oxides to the mix increases cost slightly but allows for deeper colour customisation and long-term vibrancy.
What are the benefits of polished concrete?
Polished concrete offers durability, low maintenance, and a sleek, modern aesthetic. It resists wear, stains, and moisture, making it ideal for high-traffic areas. The finish is compatible with underfloor heating and contributes to better indoor air quality. Boralstone® mixes are engineered for enhanced polishability and long-term performance, making them a reliable choice for both residential and commercial projects.
How is polished concrete made or installed?
The process begins with a high-quality concrete mix, such as Boralstone®, which includes selected aggregates and optional Colori® oxides. After curing, contractors use diamond grinders to refine the surface through multiple stages. Densifiers are applied to strengthen the concrete, and sealers may be added for extra protection. The final finish depends on the chosen exposure level and polishing method.
How do you maintain polished concrete?
Maintenance is simple and cost-effective. Regular dust mopping and occasional wet cleaning with pH-neutral cleaners will keep the surface looking fresh. Avoid harsh chemicals or abrasive pads. Depending on traffic levels, resealing may be required every few years to maintain gloss and protect against wear.
What is the difference between polished concrete and grind and seal?
Polished concrete is mechanically refined using diamond abrasives and densifiers, resulting in a long-lasting, integrated finish. Grind and seal involves surface grinding followed by the application of topical sealers. While grind and seal is faster and less expensive, it is more prone to wear and may require more frequent resealing.
What finishing options are available for polished concrete?
Polished concrete can be tailored to suit different environments:
- Full polish: High-gloss finish with full aggregate exposure.
- Medium polish: Satin finish with partial exposure.
- Honed: Matte finish with slip resistance, ideal for outdoor areas.
- Burnished: Smooth surface with minimal aggregate exposure and subtle sheen.
How long does polished concrete last?
With proper installation and maintenance, polished concrete can last for decades. Boralstone® mixes are designed for high durability and wear resistance, making them suitable for both residential and commercial applications.
Where can polished concrete be used?
Polished concrete is suitable for internal floors and countertops in homes, offices, retail spaces, and public buildings. Honed and burnished finishes are ideal for external areas such as patios, walkways, garages and entryways. It can also be used in wet areas like bathrooms and laundries when sealed appropriately.
Can polished concrete be customised with colours or aggregates?
Yes. Boralstone® mixes can be customised with Australian-sourced aggregates and Colori® oxides. Boral customers can combine multiple aggregates and select a bespoke ratio of each material to achieve a custom look to suit their project. Colori® oxides can also be integrated throughout the mix, ensuring long-lasting colour that won’t fade or wear away. This allows for creative design flexibility and colour matching to architectural elements.
What is Boralstone® and how is it different from standard concrete?
Boralstone® is a premium polished concrete system engineered for superior polishability, durability, and aesthetic control. It includes carefully selected aggregates and is compatible with a range of polishing techniques. Compared to standard concrete, Boralstone® offers better consistency, easier finishing, and longer-lasting results.
Can I use Colori® oxides in polished concrete?
Absolutely. Colori® oxides are designed to be fully integrated into the concrete mix, providing rich, consistent colour throughout the slab. They are ideal for polished concrete applications where colour depth and longevity are important.
Why do polished concrete colours vary by region?
Boral uses locally sourced aggregates from regional quarries, which influence the colour and texture of the mix. This approach reduces transport costs, lowers environmental impact, and creates a finish that reflects the natural tones of the local landscape, adding a sense of place to each project.
Is polished concrete environmentally friendly?
Yes. Boral offers ENVISIA® low carbon concrete in both standard and decorative mixes, including polished concrete. ENVISIA® reduces embodied carbon by replacing high-emission cement components, making it a more sustainable choice for environmentally conscious projects. Colori® oxides can also be integrated with ENVISIA® mixes, allowing design flexibility while achieving sustainability goals.
Can polished concrete be used with underfloor heating?
Polished concrete works exceptionally well with underfloor heating systems. It retains and radiates heat efficiently, contributing to thermal comfort and energy savings. Boralstone® floors are compatible with in-slab heating and help maintain consistent indoor temperatures.
