Gen Yacht / Underwater Primers and Barrier Systems / Nº 402 Osmo Shield
UNDERWATER PRIMERS AND BARRIER SYSTEMS · BARRIER / PRIMER
402
Osmo Shield
Epoxy · Osmosis barrier · GRP
Epoxy-based, water-resistant barrier coating that minimises water ingress and protects GRP hulls against osmosis.
An epoxy-based, water-resistant protective barrier coating. By minimising water penetration it provides long-lasting protection against osmosis, especially on GRP surfaces. It is applied preventively on new boats and as a protective barrier on boats after osmosis repair.
Technical Data
BINDER
Epoxy
COMPONENTS
Two-component (2K)
POSITION IN SYSTEM
Barrier / primer
THEORETICAL COVERAGE
8 m²/kg
APPLICATION METHOD
Brush, roller, spray
NUMBER OF COATS
3–5 coats for barrier effect
COMPATIBLE PRODUCTS
409, 425, 427, 428
COVERAGE
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COVERAGE
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COVERAGE
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COVERAGE
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COVERAGE
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DRYING
Touch dry 4 h · Launch after min. 8–24 h (20 °C, 65% RH)
PACKAGING
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COLOUR
Grey
TECHNICAL DOCUMENTS
Use and Application
AREAS OF USE
Underwater surfaces of GRP (fibreglass) boats; as a protective coat against osmosis; as a barrier in underwater paint systems.
SURFACE PREPARATION AND APPLICATION
Abrade the gelcoat to a matt finish, remove dust and wipe with solvent. On boats after osmosis repair, confirm the laminate is dry by moisture measurement. Apply coat by coat by brush, roller or spray until the required thickness is reached. Air and surface temperature must be above +5 °C and relative humidity below 85%; surface temperature must be at least 3 °C above the dew point.
SUITABLE BOAT TYPES
Technical data are average values at 20 °C and 65% relative humidity. Coverage varies with surface roughness, application method and film thickness. Consult the Gen Boya technical team for a paint schedule tailored to your boat.
KEY FEATURES
— High water resistance
— Osmosis-preventing barrier
— Sound base for antifouling systems
— Epoxy durability
SYSTEM RECOMMENDATION
SUBSEQUENT COATS
409 Vinyl Tie Coat + Gen Antifouling (425, 427, 428)