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My car's paint looks bad and I'd like to repair it, but I'm not sure what it is called.

I know there are different types of paint failure, what do they look like and what are they called?

3

I appreciate the Sherwin-Willaims Automotive Paint Troubleshooting Guide (PDF) for this. It is a very thorough guide that gives descriptions of what is going wrong, why, and how to avoid/fix it.

Here's a rundown of various problems with sample pictures of common names for problems. You can use the names as a starting point for further research. I'll be using the format of name (synonyms) [appearance time] and where possible I've added links to relevant Mechanics.SE links to other questions related to those paint problems.

Air Trapping (Craters) [Rapidly during/after painting]

air trapping

Bleeding (Discoloration) [Rapidly after painting]

bleeding

Blistering (Pimples, bubbles, bumps) [Often weeks/months after application]

blistering

Blushing (Milkiness) [Rapidly during/after painting]

blushing

Chalking (Fading, oxidation, weathering) [Rapidly after painting/Naturally over time]

chalking

Chemical staining/etching (Spotting, acid rain, discoloration) [Happens due to chemicals on paint]

acid rain

bird poop etching

Chipping (nicks, stone pecks, chips, bruises) [Happens during driving]

chipping

Color Mismatch (Off shade, off color) [Noticed during/after painting/drying]

color mismatch

Cracking (Checking, Crazing, Spitting, Alligatoring, Crowsfeet) [can happen over long periods of time]

cracking

Dirt Contamination (dust in finish) [Rapidly during/after painting]

dirt contamination

Edge Mapping (Edge ringing, featheredge lifting) [Rapidly after painting]

edge mapping

Fisheye (Silicone contamination, cratering) [Rapidly after painting, not later]

fisheye

Loss of Gloss (Hazing, dulling, dieback, matting, weathering) [Rapidly after painting/Naturally over time]

loss of gloss

Lifting (Wrinkling, raising, alligatoring, shriveling, swelling) [Rapidly after painting]

lifting

Mottling (Streaking, floating, flooding, tiger/zebra stripes) [Rapidly after painting, may not be immediately noticed]

mottling

Orange Peel (Poor flow, texture) [Rapidly after painting]

orange peel

Peeling (Flaking, delamination, loss of adhesion) [Many causes, many times]

peeling

Pinholing (popping, bubbles, air pockets) [usually above body filler, rapidly during sanding]

pinholing

Rail Dust (Rust specks) [Over time spots appear]

rail dust

Sagging/Running (hangers, curtains, signatures) [Rapidly during/after painting]

sagging/running

Sanding Marks (Streaked finish, sand scratches) [After sanding]

sanding marks

Seediness (Gritty, Dirty, grainy, speckled) [Rapidly during painting]

I can't actually find a good picture of what this ends up looking like, likely because it's something that can be identified quickly while still painting. It happens when the paint material isn't working correctly, possibly due to age, lack of mixing or other contamination. It'll basically look like a metal speckled paint, but you weren't intending speckling to be there.

Shrinkage (Bullseyes, Ringing, Edge mapping) [Rapidly after painting]

shrinkage

Soft Film (Slow dry) [Paint is soft, will pick up finger prints. Rapidly after painting]

soft film

Solvent Popping (Boiling, blowing) [Weeks after painting]

solvent popping

Tape Tracking (tracks) [Upon tape removal]

Also can't find a good clear example of this. This is when the tape fails to properly separate colors due to using the wrong tape, or putting tape on a finish that isn't quite dry, leading to solvent hanging out and letting the next color bleed into the tape, then into the paint under the tape.

Transparency (Poor hiding, poor coverage, translucent, color bleed) [Rapidly after/during painting]

transparency

Water Spotting (Water Marking) [Rapidly after painting, or after washing]

water spotting

Wrinlking (Crinkling, puckering, shriveling) [Rapidly during/after painting]

wrinkling

  • +1 - Great answer! Pictures are always worth a thousand words. I have a feeling you have more great answers in you like this :D – Pᴀᴜʟsᴛᴇʀ2 Oct 24 '15 at 15:20

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