Quick Answer

Apply the densifier after the metal bond grinding steps (around 100–200#) and before the resin polishing steps (400#+). This lets the densifier penetrate the opened surface and harden it, so the resin pads can compress and polish it to gloss. Some processes re-apply a light coat before the final burnish.

Why This Timing Works

• After metal grind — the surface is open and porous, so the densifier penetrates deeply.
• Before resin — the hardened surface takes the resin polish and holds gloss.
• If applied too early — metal bond grinding removes the densified layer, wasting it.
• If applied too late — the resin steps have already smoothed the surface; the densifier can't penetrate as well.

The Standard Sequence

Step	Action	Densifier?
1	Metal bond grind 30–100#	No
2	Metal bond refine 100–200#	No
3	Apply densifier, let dry	Yes
4	Transitional pads 200–400#	No
5	Resin polish 800–3000#	Optional light re-coat
6	Burnish	No

Tips for Good Densifier Results

• Clean the floor — dust and slurry block penetration.
• Apply evenly — use a sprayer or roller at the label rate.
• Let it dry completely — usually 30–60 minutes; don't polish wet densifier.
• Keep the surface wet briefly — some densifiers need to stay damp to penetrate; follow the product instructions.

Frequently Asked Questions

Q: Can I apply densifier before metal grinding?

Not usefully — the metal bond steps will grind the densified layer away. Apply after the coarse grinding is done.

Q: How long should densifier dry before polishing?

Follow the product data sheet — typically 30–60 minutes to dry, or up to a few hours before heavy resin polishing. Damp densifier will smear under resin pads.

Q: Do I need to re-apply densifier every time I polish?

No — one good application per full polish cycle is standard. A light re-coat before final burnish is optional for extra hardness.

Conclusion

Densifier goes after the metal grind and before the resin polish — that's the window where it penetrates, hardens and delivers gloss. Time it right, let it dry, and the final polish locks in the shine. JOY TECH's pad range supports every step of this sequence.