# Concrete Sealing and Grinding NZ (CSG Surfaces) > Canterbury's leading concrete finishing specialists with 25+ years of experience and 2,500+ floors completed. We provide concrete polishing, grinding, epoxy coatings, repairs, and floor finishing services for residential homes and commercial businesses in Christchurch and the wider Canterbury region of New Zealand. ## Services - [Concrete Polishing](/services/concrete-polishing): Transform raw or existing concrete into a smooth, low-maintenance, high-gloss or satin finish. We offer multiple exposure levels (cream, salt-and-pepper, aggregate) and sheen levels (matte through high-gloss). Suitable for living areas, kitchens, hallways, retail, hospitality, and offices. - [Concrete Grinding](/services/concrete-grinding): Surface preparation by mechanically grinding concrete to remove coatings, adhesives, paint, epoxy, and lippage. Also used to level uneven slabs or create a profile for new coatings. Essential before polishing or epoxy application. - [Epoxy Coatings](/services/epoxy-coatings): High-performance two-part epoxy systems for garages, warehouses, commercial kitchens, medical facilities, and industrial floors. Options include solid colour, metallic, flake/chip systems. Highly durable, chemical-resistant, and easy to clean. - [Concrete Repairs and Prep](/services/repairs-prep): Crack filling, joint repair, spall patching, and surface restoration before finishing. Ensures a smooth substrate and extends the life of any coating or polish. - [Polished Concrete Finishes](/services/polished-concrete-finishes): Full breakdown of finish options — matte (400 grit), satin (800 grit), semi-gloss (1500 grit), and high-gloss (3000 grit). Includes dye, stain, and guard options. ## Residential Services - [Residential Overview](/residential): Concrete flooring solutions for New Zealand homes — modern, durable, and allergen-friendly alternatives to carpet and timber. - [Living Areas and Kitchens](/residential/living-areas-kitchens): Polished concrete for open-plan living, dining, and kitchen spaces. Radiant-heat compatible. - [Hallways](/residential/hallways): Durable, easy-clean polished concrete for high-traffic hallways and entryways. - [Garage Epoxy](/residential/garage-epoxy): Garage floor epoxy coatings for Christchurch homes. Chip/flake systems hide tyre marks; self-levelling options available. - [New Build Concrete Floors](/residential/new-build): Advice and installation for new builds — coordinate with builders to achieve the right slab specification before polishing. ## Commercial Services - [Commercial Overview](/commercial): Concrete flooring for retail, hospitality, medical, warehouse, gym, and industrial environments. - [Retail Flooring](/commercial/retail): Polished or epoxy concrete for retail fit-outs. Durable under heavy foot traffic; customisable to brand colours. - [Hospitality and Café Flooring](/commercial/hospitality): Restaurant and café concrete floors — hygienic, easy to clean, and visually striking. - [Medical and Healthcare](/commercial/medical): Seamless, hygienic epoxy flooring systems for medical centres, labs, and pharmacies. - [Warehouse and Factory Flooring](/commercial/warehouse-factory): Heavy-duty industrial coatings and grinding for warehouses, factories, and distribution centres. - [Gym Flooring](/commercial/gym): Slip-resistant, durable coatings for gym floors and training facilities. ## Service Areas - [Christchurch](/locations/christchurch): Our primary service area. Full range of services available. - [Rolleston](/locations/rolleston): Concrete polishing and epoxy services in Rolleston and the Selwyn District. - [Rangiora](/locations/rangiora): Services available in Rangiora and North Canterbury. - [Lincoln](/locations/lincoln): Concrete floor services in Lincoln and surrounds. - [Kaiapoi](/locations/kaiapoi): Services available in Kaiapoi. - [West Melton](/locations/west-melton): Services available in West Melton. - [Ashburton](/locations/ashburton): Concrete services in Ashburton and Mid Canterbury. - [Timaru](/locations/timaru): Services available in Timaru and South Canterbury. - [All Locations](/locations): Full service area list across Canterbury. ## Pricing and Timeframes Concrete polishing costs in New Zealand typically range from NZD $80–$200+ per square metre depending on the condition of the slab, desired finish level, and any repair work required. Epoxy coatings for garages start from approximately NZD $60–$100 per square metre. Commercial projects are priced on application. Typical project timeframes: - Small residential room (20–40 m²): 1–2 days - Whole-home polish (100–200 m²): 3–5 days - Garage epoxy (40–80 m²): 1–2 days - Large commercial: 1–3 weeks depending on scope ## Frequently Asked Questions **What is concrete polishing?** Concrete polishing is a multi-step mechanical process that grinds and hones a concrete slab using progressively finer diamond tooling, then densifies and seals the surface to create a durable, glossy or satin finish. **How long does polished concrete last?** A properly polished and maintained concrete floor can last the lifetime of the building — 20–50+ years. It does not need to be replaced like carpet or timber. Periodic re-sealing (every 2–5 years) maintains the finish. **Is polished concrete slippery?** Polished concrete has a similar slip rating to polished timber. Anti-slip additives can be incorporated into the surface sealer for wet areas or commercial environments. **Can existing concrete be polished?** In most cases, yes. The slab must be in good condition with no major structural cracking. Minor cracks and spalls are repaired before polishing. Old adhesive, paint, or coatings are ground off first. **What is the difference between grinding and polishing?** Grinding is aggressive surface removal using coarse diamond tooling (16–60 grit) to flatten, level, or remove coatings. Polishing continues from grinding, progressing through finer grits (100–3000) to achieve a refined surface sheen. **How do I maintain polished concrete?** Use a damp mop with a pH-neutral cleaner. Avoid acidic cleaners (vinegar, citrus). Use felt pads under furniture. Apply a concrete guard/sealer every 2–5 years. **Can polished concrete be used with underfloor heating?** Yes. Polished concrete is an excellent conductor and works very well with hydronic (water-pipe) underfloor heating systems. **How long does epoxy flooring take to cure?** Foot traffic: 24–48 hours. Full vehicle traffic: 7 days. The garage or area should remain dry during this period. ## Company - [About Us](/about): 25+ years of experience. Family-owned Canterbury business. 2,500+ floors completed across residential and commercial projects. - [Projects Gallery](/projects): Portfolio of completed concrete polishing and epoxy projects across the Canterbury region. - [Customer Reviews](/): Google-verified reviews from Christchurch homeowners and businesses. - [Blog and Guides](/guides): Educational articles on concrete polishing costs, maintenance, epoxy vs polished concrete, and more. - [FAQ](/faq): Full list of frequently asked questions. ## Contact - [Request a Free Quote](/contact-us): Submit a project enquiry online. We respond within 1–2 business days. - Phone: 0800 765 474 (freephone NZ) - Email: info@concretesealing.co.nz - Address: Christchurch, Canterbury, New Zealand - Business Hours: Monday–Friday 7:30am–5:30pm, Saturday 8:00am–2:00pm NZST ## Optional - [Privacy Policy](/privacy): How we collect, use, and protect personal information. - [Terms and Conditions](/terms): Terms of service for CSG Surfaces. - [Sitemap](/sitemap.xml): Full site structure in XML format.