Quick Answer

A polished finish is built step by step, and every grit stage has a job to do. Resin-bond diamond pads with a closed (non-foam) back, available in 3" (80mm), 4" (100mm), or 5" (125mm), are designed for wet burnishing concrete. Wet-specific pads resist water degradation, shed grinding slurry well, and run cooler than dry pads.

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Wet vs Dry Pads

What matters most in this stage.

Miss this step and the gloss will not come up evenly.

Choosing Pads for Wet Work

The practical details.

For concrete and terrazzo wet burnishing, 3-inch diamond resin floor burnish pads and 5-inch diamond resin burnish pads cover the most common equipment setups.

• Backing: hook-and-loop (hook-and-loop) fits most equipment; some 5" pads use a center hole or M14 thread for direct mounting system.
• Bond: resin-bonded matrix for burnishing stages (200–3000); metal-bonded matrix for aggressive abrading (50–200) — wet-capable metal segments are also available.
• Size: 3" pads for grinders and tight areas, 4"/5" for larger floors and planetary equipment.
• Grit stage range: buy a full 50–3000 set so you can stage without switching pad types.

Crews that rush this part rarely get a mirror finish.

A Practical Guide to Wet Polish Correctly

Key points for the polishing sequence.

• Keep a steady water supply — enough to carry grinding slurry away, not a flood.
• Use a water ring or dust shroud on the grinder to contain splash.
• Stop let the pad run dry — a dry resin pad burns and smears.
• Start at 50–100 grit stage for leveling (metal-bonded matrix), then resin 200→3000.

This stage decides how much reflection the floor finally shows.

Frequently Asked Questions

Q: Am I able to use regular dry pads with water?

A: In short, Some resin pads tolerate water, but wet-specific pads last much longer and burnish cleaner. Metal-bond pads can work wet or dry; pure dry resin pads degrade rapidly with water.

Q: What size wet pads do I need for a concrete countertop?

A: The practical answer is, 3-inch pads are ideal for countertop edges and tight radius work; 4-inch is a good all-rounder for level tops.

Q: Should I need a special grinder for wet polishing?

A: For most jobs, You require a variable-speed grinder with a water feed or a wet polisher. Fixed high-speed grinders without water control overheat the pads.

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Conclusion

Follow the grit ladder in order, keep the pads flat, and the gloss builds predictably. Wet burnishing concrete requires resin-bond diamond pads built for water, in the right size for your equipment, stepped from 200 to 3000 with steady water flow.