Professional Concrete Grinding Canberra
Why is professional concrete grinding essential before coating?
Professional concrete grinding is the most critical step in epoxy flooring, involving the mechanical removal of surface laitance and contaminants to achieve a specific Concrete Surface Profile (CSP). In Canberra’s variable climate, this creates the necessary mechanical bond for resin adhesion, preventing future peeling, bubbling, and premature coating failure.
Why Diamond Grinding Outperforms Acid Etching
While hardware store "DIY Kits" recommend acid etching, this method is insufficient for Canberra's dense concrete slabs. Acid etching only cleans the surface; it doesn't create the mechanical "teeth" required for industrial resin to bite into the concrete.
Our diamond grinding process uses planetary rotating heads that shave off the top 1-2mm of the slab. This removes grease, curing compounds, and the "laitance" layer, exposing the solid aggregate beneath.
The Benefits of Professional Grinding:
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**Maximum Adhesion:** Achieve a CSP 3 profile for a lifetime chemical bond.
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**Contaminant Removal:** We strip oil, tire marks, and previous failed coatings.
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**Floor Leveling:** Grind down high spots and lips between concrete joints.
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**Dust-Free:** HEPA-filtered vacuum systems keep your property clean.
Our Equipment Fleet
Planetary Diamond Grinders
Large-scale machines for open areas (Garages, Warehouses).
Edge Grinders
Precision hand-tools to grind within 1mm of your walls.
HEPA Dust Extractors
Ensuring zero respirable silica dust enters your home or business.
Concrete Grinding Applications
Coating Removal
Removing failed DIY epoxy, old floor paint, or stubborn carpet glue and tile adhesive residues.
View Prep Methods →Epoxy Prep (CSP 3)
The standard mechanical profile required for residential garage and commercial flake systems.
MOST POPULARBurnished Concrete
Fine-grit grinding to produce a smooth, matte finish for architectural living spaces or modern offices.
See Finishes →Our Technical Grinding Process
Hardness Testing (Mohs Scale)
We test your concrete's hardness to select the correct diamond bond (Hard, Medium, or Soft). Using the wrong diamond on Canberra's variable concrete will lead to poor profiling.
Initial Stripping Pass
A low-grit pass (16-30 grit) to remove the surface layer, old coatings, and contaminants, exposing the fresh concrete matrix.
Profiling Pass (CSP-3)
A second pass with 40-80 grit diamonds to refine the surface and achieve the specific texture required for the resin system being applied.
Edge Refining
Hand-grinding all perimeters to ensure no patches of old coating remain and the profile is consistent to the very edge of the slab.
Concrete Grinding Pricing Guide
| Service Type | Indicative Cost | Best For |
|---|---|---|
| Standard Epoxy Prep | $15 – $22 /m² | Garages, Warehouses |
| Coating Removal | $18 – $28 /m² | Failed Epoxy, Paint |
| Glue/Adhesive Stripping | $12 – $18 /m² | Carpet/Tile Prep |
| Edge Work Only | $10 – $15 /linear m | Restricted Access |
Prices vary based on concrete hardness and total area size. Contact us for a firm site quote.
Concrete Grinding FAQs
How loud is concrete grinding?
Industrial grinding is loud (approx. 90-100dB). We recommend occupants remain in another area or wear hearing protection. Our operators wear full PPE during the entire process.
Can you grind concrete that is wet?
We prefer dry grinding for epoxy preparation as it allows our HEPA vacuums to work at maximum efficiency. Wet grinding creates "slurry" which can trap moisture in the slab, potentially causing epoxy failure.
How long does it take to grind a double garage?
A standard double garage (approx. 36-40m²) usually takes 3 to 5 hours for full diamond grinding and edge refinement, depending on concrete hardness and existing coatings.
Start With a Professional Profile
Don't guess your concrete profile. Our Canberra experts provide free site measures and hardness testing to ensure your project starts with the perfect mechanical bond.