Concrete Grinding Process
Professional Floor Preparation From Coating Removal to High Gloss Finishing
Complete Grinding Workflow
Inspection→
Coating Removal→
Grinding→
Refining→
Polishing→
Finished Floor
STEP 1
Inspection
Evaluate the floor condition before grinding.
- Concrete hardness
- Existing coating
- Surface damage
- Crack inspection
Recommended Tools
- Mohs Hardness Tester
- Crack Repair Products
STEP 2
Coating Removal
- Remove epoxy
paint
adhesive
coatings
Recommended Tool:
- PCD Tools
STEP 3
Concrete Grinding
- Flatten the slab and remove scratches.
Recommended Tool
- Metal Bond Grinding Tools
STEP 4
Surface Refining
- Remove deep scratches before polishing.
Recommended Tool
- Hybrid Pads
STEP 5
Concrete Polishing
- Increase gloss from matte finish to mirror finish.
Recommended Tool
- Resin Polishing Pads
STEP 6
Finished Surface
- Uniform gloss
- Easy maintenance
- Long service life
Recommended Concrete Grinding Sequence
| PHASE | PROCESS | STEP | RECOMMENDED TOOLS |
|---|---|---|---|
| Phase 1 | Coating Removal | 01 | PCD Tools |
| Phase 2 | Concrete Grinding | 02 | 16 Grit Metal Bond |
| 03 | 30 Grit Metal Bond | ||
| 04 | 50 Grit Metal Bond | ||
| 05 | 80 Grit Metal Bond | ||
| Phase 3 | Surface Refining | 06 | Hybrid 100 |
| 07 | Hybrid 200 | ||
| Phase 4 | Polishing | 08 | Resin 50 |
| 09 | Resin 100 | ||
| 10 | Resin 200 | ||
| 11 | Resin 400 | ||
| 12 | Resin 800 | ||
| 13 | Resin 1500 | ||
| 14 | Resin 3000 |
Choose the Correct Bond
| MOHS HARDNESS | Mohs 2-3 | Mohs 4-5 | Mohs 6-7 | Mohs 8-9 |
|---|---|---|---|---|
| MPA | C10-C25 | C30-C40 | C45-C55 | C60-C70 |
| CONCRETE FLOOR | Soft Floor (SF) | Medium Floor (MF) | Hard Floor (HF) | Very Hard Floor (VHF) |
| DIAMOND BOND HARDNESS | Hard Bond (HB) | Medium Bond (MB) | Soft Bond (SB) | Very Soft Bond (VSB) |
| DIAMOND BOND COLOR | RED | YELLOW | BLACK | BLUE |
Recommended Tool System
Concrete Grinding Process
From Rough To Smooth,Step By Step
FAQ
Q1.What grit should I start with?
Answer:
There isn’t a single starting grit for every floor. If you’re removing coatings, start with a PCD tool. For bare concrete, most contractors begin with 16# or 30# metal bond diamonds, depending on how uneven or hard the floor is. Always inspect the slab before choosing the first grit.
Q2.Can PCD remove epoxy?
Answer:
Yes. PCD tools are one of the fastest ways to remove thick epoxy coatings, paint, glue and mastic. They are designed for coating removal rather than grinding concrete, so once the coating is removed, the floor should be continued with metal bond diamonds.
Q3. How do I know concrete hardness?
Answer:
The most reliable method is to test the slab with a Mohs hardness kit. If a tester isn’t available, experienced contractors often judge hardness by how quickly the diamonds wear during the first grinding pass. Choosing the right bond for the concrete is more important than choosing the grit itself.
Q4.How many grinding steps are required?
Answer:
It depends on the condition of the floor and the finish you want. For a standard polished concrete floor, 6–8 grinding and polishing steps are common. Floors with heavy coatings, uneven surfaces or damage may require additional grinding passes.
Q5:When should I switch to resin pads?
Answer:
Switch to resin pads only after the metal bond scratches have been removed. The surface should feel smooth and have a consistent scratch pattern. Moving to resin too early usually makes polishing slower and can leave visible scratches in the finished floor.
Need Help With Concrete Grinding?
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