Quick Answer

Coatings only bond as well as the surface they sit on. To strip 2-3 mm of old epoxy resin, polyurethane or paint build-up, use PCD tooling at low speed in shallow, overlapping passes. Strip thick build-up with PCD tooling at low speed in shallow, overlapping passes — do not force the full 2-3 mm depth in one cut.

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PCC Stripping Technique

The details that matter.

• Shallow passes — let the equipment weight do the work; add only light down-pressure.
• Industrial vacuum constantly — PCD stripping produces heavy fine dust and chips; extraction keeps the tool sawing and controls silica.
• Set the right speed — run the grinder at low-mid rotations per minute. High speed glazes PCD and burns the coating layer.
• Overlap 30% — keeps the strip line consistent and avoids ridges between passes.

Most coating warranties start and end with the surface profile.

About Tooling Choice

Key factors in coating work.

After stripping, follow with 30/46 metal-bond abrading to strip the last coating layer film and profile the concrete.

This is the step that decides whether the coating lasts.

Frequently Asked Questions

Q: Am I able to skip grits to save time?

A: In short, Only when the slab is already even and you are refining. On coarse or ground-new concrete, skipping leaves a scratch mark pattern finer pads cannot resolve.

Q: How do I know my bond is right?

A: The practical answer is, When segments glaze and stop sawing, the bond is too hard; if they wear level in under half a set, it is too soft. Match bond to concrete hardness.

Q: Should I grind wet or dry?

A: For most jobs, Dry abrading with a HEPA industrial vacuum is standard on glossy concrete projects; wet abrading is mostly used for stone and edge work to control fine dust and heat.

Q: At what interval should I change plates?

A: In short, Change the whole set together once segment height drops by half or the cut rate slows. Mixing new and worn plates causes uneven scratch mark patterns.

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Conclusion

The surface profile is the whole game - fix it before the coating goes on. Selecting the right bond, grit stage and technique for your concrete project saves tooling investment and avoids rework.