Concrete Sealing and Grinding

We are experts when it comes to concrete

Welcome to Concrete Sealing and Grinding. We are a highly-experienced team with an extensive range of planetary diamond grinding machinery and tooling. Using the latest technology combined with tried and tested processes to produce the product we pride ourselves on.

Contact Us

Based in Christchurch, we offer a range of concrete services including polishing concrete, grinding, sealing, repairs and levelling. We believe no job is too big or small and our knowledgeable crew can take on both residential and commercial projects – every job is treated with equal importance.

Our Mission


With a combined experience of over 30 years, the team here at Concrete Sealing and Grinding NZ operates extensively through the South Island. We have a well-documented history of achieving excellence in concrete sealing and polishing, maintenance and grinding of a variety of tasks for both national and international clients.


The team here are tight-knit and knowledgeable. We offer the very best in concrete services for both commercial and residential settings and have the ability to work well with other trades that may also be on a project. We can coordinate our wok to fit with your schedule and give you the best possible result.


We pride ourselves on our strong reputation and believe when we finish a job, our name is written on your floor. This is why we ensure that every job reaches our exact standards. Our experienced personnel are dedicated to improving the appearance of new or existing concrete.

What We Do:

Our services include commercial and residential projects from new builds to renovations and repairs. Our expertise include:

  • Polished concrete
  • Bush-hammering/TextureSafe
  • Grinding and sealing
  • Repairs
  • Floor leveling
  • Epoxy coating/painting
  • Crack injection
  • Expansion joint filling
  • Driveway, pathway, patio repairs, resealing and re-coloring
  • Tile and glue removal
  • Earthquake damage repairs

Popular Questions

Concrete Sealing and Grinding NZ have extensive knowledge in the use of concrete repair products and technology and can provide fast, cost effective solutions to make your floor surface safe and the concrete structure sound. We can work with you to come up with the best possible solution. Our friendly team are always available for a no obligation discussion on how we can assist you, so get in touch today.

Concrete Sealing and Grinding works with the best suppliers so we have the right products for every application. Our suppliers include Lesa Systems Ltd, who offer one of the largest ranges of shear dowels and joint armouring systems in Australasia, and Concrete Plus Ltd, who have a comprehensive range of decorative concrete products including Stampcrete, Stencilcrete, Covacrete and Colour Thru for new and existing concrete as well as Mastershield for internal flooring solutions. We also use Artizan Diamond Tools & Equipment, who are New Zealand designers and manufactures of high-quality diamond tools and equipment, and Sika NZ Ltd, who supply a full range of concrete technology, sealers and concrete repair products.

Concrete Sealing and Grinding NZ can grind, smooth and level most new or existing floors to expose the composite within until the desired degree of aggregate is achieved. This involves grinding the concrete and then polishing up to 3000 grit with special bonded diamonds to achieve the desired surface, which is then sealed with one of our special coatings that produces a hard wearing, low maintenance and fashionable finish. Concrete Sealing and Grinding NZ can also grind your concrete to remove glue, paint, wax, fiberglass and stains, as well as to repair rain-damaged concrete.