Quick Answer

Coating failure almost always starts with surface preparation. Black cutback glue layer and VCT glue come off concrete fastest with PCD abrading discs on a floor abrading equipment. PCD tooling shears the glue layer off in one pass and leaves a clean, profile-ready slab.

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Why Vinyl Glue Is Tricky

What causes it.

A standard metal-bond pad will glaze and stop sawing within minutes.

Getting prep wrong here shows up later as peeling or delamination.

Step by Step

The details that matter.

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• Industrial vacuum thoroughly. Residual glue fine dust will interfere with new coating layers.
• Scrape loose sheets with a floor scraper. Strip any vinyl or VCT tiles first.
• Fit PCD discs. Our WerkMaster PCD tooling or Husqvarna Piranha PCD tooling are both designed for sticky coating layers. One or two per plate is typical.
• Switch to metal-bonded matrix. Once the glue is gone, run a 30/46 metal-bond disc like our S-segment abrading discs to clean up the PCD scratch marks.
• Abrade slowly. Let the PCD do the work. Forcing the grinder loads the discs.

Most coating warranties start and end with the surface profile.

About What About Chemicals?

Key factors in coating work.

Glue layer removers (citrus or soy-based) help on small patches but require 30-60 minutes dwell time and leave the slab wet.

This is the step that decides whether the coating lasts.

Health Note: Asbestos

What causes it.

If the building was built before 1980, assume old VCT backing may contain asbestos.

Getting prep wrong here shows up later as peeling or delamination.

Frequently Asked Questions

Q: Can I use a standard diamond cup wheel on vinyl glue?

A: The practical answer is, It will load up almost immediately. PCD is required for any asphalt-based glue layer.

Q: How exactly do I know all the glue is off?

A: For most jobs, Run a hand across the floor. It should feel like clean concrete, not tacky. A black rag wiped over the slab should not pick up black residue.

Q: Does glue removal damage the slab?

A: In short, PCD leaves scratch marks but does not gouge concrete. The follow-up metal-bond pass brings the slab back to a uniform profile.

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Conclusion

The surface profile is the whole game - fix it before the coating goes on. Scrape, PCD abrade, metal-bond finish, industrial vacuum.