Repair and paint a scraped plastic bumper

Plastic bumper repair

Guide to repairing and painting a scraped plastic bumper

A scraped painted bumper needs clean plastic, flexible shaping, controlled sanding, plastic primer filler and a clearcoat that protects the matched colour coat. This guide explains how the cleaner, filler, primer filler and clearcoat stages work together for a neat local repair.

What do you need to repair a scraped plastic bumper?

Cleaning and degreasing

Mipa silicone remover and Mipa silicone remover spray remove wax, grease and silicone before sanding, filling, primer or coating work starts.

Flexible scratch filling

Mipa P 35 Elastic fills scraped bumper contours and stays suitable for overpaintable plastic parts that need a flexible repair layer.

Sanding and surface checking

MP Sanding Sponge follows bumper curves without cutting hard edges, while Mipa Control Spray reveals low spots, pinholes and sanding marks before primer.

Plastic primer filler

Mipa 1K Plastic Primer Filler Spray and the 1l version help fill fine sanding marks and create a paint ready base on common automotive plastics.

Clearcoat protection

Mipa 2K Clearcoat Spray suits smaller clear-over-base repairs, while Mipa 2K-HS Clearcoat CC 8 with HS 10 hardener suits spray-gun finishing on larger or repeated jobs.

How to repair and paint a scraped plastic bumper

1
Clean before sanding

Remove wax, silicone and road film so the abrasive, filler and primer work on clean plastic instead of contamination.
2
Shape the scrape

Feather the damaged edge, apply flexible filler only where the scrape needs levelling, then sand the contour back into the bumper shape.
3
Check the surface

Use control spray over the filled area and sand until the guide coat shows an even repair without low spots or pinholes.
4
Prime and colour

Apply plastic primer filler, refine the primer surface and apply the matched colour coat over the repaired zone.
5
Clearcoat the repair

Finish with 2K clearcoat, then allow the clear layer to cure before washing or loading the bumper surface.

Which bumper repair format should you choose?

Aerosol repair

The spray formats suit small local bumper scrapes, spot repairs and repairs where a spray gun is not practical.

Spray-gun repair

The 1l primer filler and CC 8 clearcoat method suits larger bumper areas, repeated work and paintshop use with the correct gun setup.

Technical details

Mipa P 35 Elastic is a flexible filler for overcoatable plastic parts and is useful where the bumper contour has to be rebuilt.
Mipa 1K Plastic Primer Filler is intended for common automotive plastics and helps fill fine marks before colour coating.
Mipa Control Spray is a guide coat only; it helps reveal sanding faults while the repair can still be corrected.
Mipa 2K-HS Clearcoat CC 8 uses a matching HS hardener, with HS 10 suited to room temperature drying in the clearcoat system.
Silicone remover should be used before sensitive coating stages so grease, wax and polish residue do not get trapped under primer or clearcoat.

Practical suggestion

Keep the repair area slightly wider than the visible scrape so the filled edge, primer edge and clearcoat blend have enough room to level cleanly.