Enciclopedia de yates
Blistering
Blistering on GRP yachts: how FairHelm reads gelcoat blisters, survey caution, and limits on equating every blister with catastrophic osmosis.
Qué es
Blistering is raised blister or dome formation in gelcoat or near-surface laminate, sometimes linked to moisture, voids, or osmosis-type processes.
Anchor
FairHelm sees scattered cosmetic blisters and denser fields on older Baltic hulls after many antifouling cycles. Pattern and depth matter more than a single photo.
FairHelm judgment
FairHelm judgment: treat blister fields as a survey and moisture-mapping item. Do not accept a seller claim that all blisters are harmless without opening or moisture context.
Limits
We do not invent a blister count that always means full peel. Surveyor sampling and lab notes rule when needed.
Preguntas frecuentes
Q: Is blistering the same as osmosis?
A: Related language overlaps. Not every blister proves classic osmosis laminate failure.
Q: Can antifouling hide blisters?
A: Thick paint can mask early domes. Haul-out inspection still needed.
Q: Do tiny blisters always need full epoxy rebuild?
A: Not always. Extent and moisture decide the repair path.