Quick Answer

A high-gloss finish needs four stages done in order: grind with metal bond to a smooth profile, densify to harden the surface, polish with resin pads up to 1500# or 3000#, then burnish for the final reflection. Skipping densifying is the most common reason gloss falls short.

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Stage 1: Grind to a Smooth Base

Level the floor with coarse metal bond (16# or 30/40#), then step down through 60/80# and 100/120#. The base profile decides the final gloss - deep scratches will reappear no matter how fine you polish.

Stage 2: Densify at the Right Time

Apply a lithium or silicate densifier after the coarse grinding, on a clean surface. It hardens the paste and reduces porosity, which lets the fine grits polish to a higher shine. Follow the manufacturer's cure time before continuing.

Stage 3: Polish Through the Resin Steps

Work from 200# through 400#, 800#, 1500# and 3000# with resin or hybrid pads. Change direction between grits, keep pads flat, and vacuum between steps. The gloss builds visibly from 800# onward.

Stage 4: Burnish and Protect

Finish with a burnishing pad at high speed to close the surface and lift the reflection. Optionally apply a polish guard. Let the floor cure before heavy traffic.

Common Gloss Killers

• Skipping the densifier
• Jumping grit steps and leaving scratches
• Dirty pads or floor between grits
• Polishing before the densifier cures

Frequently Asked Questions

Q: What grit gives a mirror finish?

A>Usually 1500# plus 3000# and burnishing; some floors need 3000# twice.

Q: Can I get gloss without a densifier?

A>A soft, porous floor will hold a lower gloss and dust more. Densifying is strongly recommended.

Q: How long until the floor is walkable?

A>Foot traffic within hours, vehicle traffic after 3-7 days depending on the densifier.

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Conclusion

High gloss is the payoff of a disciplined process. Grind clean, densify on time, polish step by step, and burnish at the end - the floor will reflect the work you put into it.