- Star Crazing – This effect can occur where the gelcoat is brittle. Fine cracks usually form due to severe flexing or impact damage, allowing water to seep into the laminate.
- Pinholes – Tiny bubbles present in the gelcoat reduce its effectiveness and promote rapid water absorption.
- Prominent Fibers – Seen protruding beneath or through the gelcoat and can cause ‘wicking’ where water is drawn into the hull by capillary action.
- Under-curing of the Gelcoat - Incorrect mixing or application in unsuitable conditions can cause failure to cure properly. This results in porosity and may lead to water ingress.
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