Terminology

Click on the terms below for an image

Airbubbles

Alligatoring
Alligatoring is caused if gel coat was applied too thin or if it catalyzed improperly. The polyester resin contains styrene, which attacks the gel coat. If the gel coat is too thin, it will crinkle.

Bleeding

Blistering caused by a Catalyst drop

Blistering, Gel-Coat vs. Laminate

Catalyst Dropgassing

Chalking
A surface phenomenon indicating degradation of a cosmetic surface. Chalking is a powdery film which appears lighter than the original color.

Cracks - Reverse Impact

Cracks - Frontal Impact

Cracks - Stress

Dimples

Distortion

Distortion - Fiber Patterns

Fisheye
The effect of surface contamination which causes a circular separation of a paint or gel coat.

Pigment Darting

Pigment/Color Seperation

Pinholes

Porosity
Entrapped gas bubbles or voids in a gel coat film.

Pre-Release Before Lamination

Pre-Release During/After Lamination

Resin Tearing
separation of pigments in a gel coat affecting cosmetic appearance.

Contaminated Solvent

Water Spotting

Yellowing