Paint spoilers and exterior trim pieces

Exterior trim refinishing

Guide to painting spoilers and exterior trim pieces

Spoilers and exterior trim pieces need adhesion on plastic and a finish that can handle sun, washing and road exposure. A clean primer layer helps the matched colour coat and clearcoat stay consistent over curved edges and larger trim faces.

What do you need to paint spoilers and exterior trim pieces?

Cleaning and degreasing

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

Plastic adhesion primer

Mipa 1K Plastic Primer and Mipa Plastic Primer Spray create adhesion on prepared plastic covers before the matched colour coat and clearcoat are applied.

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 paint spoilers and exterior trim pieces

1
Clean all edges

Degrease the visible face, edges and mounting areas so old polish and road film do not contaminate the primer.
2
Sand evenly

Key the plastic without flattening styling lines, because spoilers and trim pieces show uneven sanding quickly under gloss.
3
Prime for plastic

Apply Mipa 1K Plastic Primer or plastic primer spray as the adhesion stage before the colour coat.
4
Colour and clearcoat

Apply the matched colour coat and protect it with the chosen Mipa 2K clearcoat method.
5
Refit after curing

Allow proper curing before clips, tape or fixings press against the fresh coating.

Which exterior trim finish method should you choose?

Aerosol detail work

Aerosol primer and clearcoat are useful for single trim pieces and smaller spoiler repairs.

Spray-gun finishing

Liquid primer and CC 8 clearcoat with hardener suit larger spoilers, multiple trim pieces and repeat refinishing work.

Technical details

Plastic adhesion primer is the key stage between prepared trim plastic and the colour coat.
Clearcoat protects the matched colour coat against weathering and washing after the part is fitted outside the vehicle.
Silicone remover helps remove old wax and dressing residue that often collects on spoilers and exterior trim.
Edges should be cleaned and coated carefully because chips and peeling often start where the film is thin.

Practical suggestion

Support the spoiler or trim piece so every edge can be sprayed without touching the wet face or forcing heavy paint onto one side.