Енциклопедія яхт
Epoxy barrier coat
Epoxy barrier coats on GRP hulls: role after treatment, survey reading of claims, and FairHelm limits on guaranteeing dry laminate.
Що це
An epoxy barrier coat is a multi-layer epoxy system applied below the waterline to slow moisture ingress into polyester GRP after proper surface prep and drying.
Anchor
FairHelm often sees barrier claims after osmosis jobs on Baltic boats. Yard notes should state strip depth, drying method, and product system. Antifouling sits on top; it is not the barrier itself.
FairHelm judgment
FairHelm judgment: "barrier coated" without moisture history is marketing. Ask for before/after maps and warranty terms. Fresh antifouling alone does not prove a barrier exists.
Limits
Barrier coats reduce risk; they do not make laminate immortal. Application quality and prior moisture dominate outcomes. No invented success percentages here.
Часті запитання
Q: Is antifouling the same as a barrier coat?
A: No. Barrier is epoxy prep. Antifouling is growth control on top.
Q: Can I barrier-coat over active blisters?
A: Not as lasting repair. Treat moisture first.
Q: Does every new boat need a barrier?
A: Builder systems vary. Read the construction and warranty notes.