Repair stone chip coating on lower panels

Car underside protection

Guide to repairing stone chip coating on lower panels

Lower panels, sills and wheel arch edges need a clean, keyed surface before renewed stone chip coating. This guide focuses on cleaning, scuffing and applying paintable protection that helps shield exposed lower body areas from grit, road dirt, salt and everyday impact.

What do you need to repair stone chip coating on lower panels?

Cleaning and degreasing

Mipa silicone remover in liquid or spray format removes grease, wax and silicone before sanding or coating. Clean preparation lowers the risk of adhesion defects under the protective layer.

Manual scuffing pad

MP Soft Pad Fine follows lower panel edges, seams and wheel arch contours where a rigid block is awkward. It helps create an even keyed surface before fresh protection is applied.

Sprayable stone chip protection

Mipa stone chip protection in the 1 l sprayable format is suited to larger lower sections, floor areas and wheel housings. The paintable elastic coating adds impact resistance and sound deadening character.

Aerosol stone chip protection

Mipa stone chip protection spray, paintable, 500 ml is practical for local repairs on sills, lower panels and wheel arch edges. The aerosol format helps when the damaged area is limited or difficult to reach.

How to repair and protect lower panels from stone chips

  1. 1
    Clean the repair area

    Wash away road dirt first, then degrease with silicone remover so wax, tar and polish residue do not stay under the coating.

  2. 2
    Remove loose material

    Take away flaking old coating, loose rust and weak edges until the remaining surface is stable enough to hold the next layer.

  3. 3
    Scuff the surrounding surface

    Use the soft pad around the repair edge so the new stone chip coating can blend into the existing protected area instead of sitting on a glossy border.

  4. 4
    Apply the protective coating

    Spray even coats over the prepared lower section, building the film gradually rather than flooding the panel.

  5. 5
    Let the coating dry before overcoating

    Allow the layer to dry according to the product information before applying colour or further finishing coats over paintable stone chip protection.

Which stone chip protection format should you choose?

Choose 500 ml aerosol for local repairs

The aerosol is the easiest format for small lower panel repairs, sill edges and wheel arch touch ups where a compact spray pattern is enough.

Choose 1 l sprayable coating for larger areas

The 1 l sprayable material suits wider lower sections, floor pans and wheel housings where a consistent protective layer is needed across more surface area.

Technical details

  • Mipa stone chip protection spray is listed by Mipa as recoatable durable elastic protection against stone chips, corrosion, de-icing salt and mechanical wear.
  • The 500 ml stone chip spray is useful for local lower-panel protection and is offered in light grey and black finishes for matching the repair area.
  • The 1 l paintable stone chip protection option is available in black and white colour variants.
  • Silicone remover should be used before coating because contamination under the film can weaken adhesion and make later paint defects more likely.
Practical suggestion

For visible lower body areas, plan the texture before spraying. A protected sill or wheel arch edge looks cleaner when the repaired coating is kept even from end to end and not only patched in the damaged spot.

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