Polishing & Paint Correction2 min read

Solvent Pop in Car Paint: Why Heavy Cut Compound Is Not a Repair

Small open craters in a refinished panel can be solvent pop rather than ordinary surface scratches. Identify the defect before choosing heavy cut compound or promising a ceramic coating finish.

Updated · NANOLAB Knowledge

Distinguish a crater from a scratch

Examine the clean, dry panel with an oblique inspection light. A scratch usually presents a line or track; solvent pop presents openings in the paint film. Appearance alone cannot establish the depth or the cause. Ask when the panel was refinished, whether the defect appeared during drying, and whether the repairer has already inspected it.

Why polishing can give a misleading improvement

Compound may improve the surrounding gloss while leaving the openings intact. Residue can also collect in the craters, temporarily changing their appearance. Reducing the surrounding paint until a crater appears less visible is not a controlled repair. PPG identifies sanding and refinishing as correction routes for solvent pop, with severe cases requiring removal back to an underlying layer.

Build the workshop decision

Photograph the area before treatment and separate unaffected panels from the suspect repair. Do not select sanding grades or removal targets from a generic detailing recipe. Refer the affected area to the refinisher for an assessment of the paint system and repair depth. Continue an agreed detailing service elsewhere only when its scope is clear.

What to tell the customer

Explain that gloss enhancement and film repair are different outcomes. List the area that remains untreated, the reason for referral and the next inspection needed. Apply a ceramic coating only after the repaired finish is suitable for that coating system; a coating does not close paint-film defects.

Frequently asked question

Can finishing polish close solvent-pop holes?

No. It can alter the surrounding appearance, but closing or rebuilding a defective paint film requires a repair process chosen by the refinisher.

Technical reference