Gen Yacht / Antifouling Paints / Nº 425 Evolution
ANTIFOULING PAINTS · ANTIFOULING TOPCOAT
425
Evolution
Tin-free · Self-polishing · Marina and offshore
Tin-free, self-polishing antifouling that reduces friction for better fuel efficiency and a long service life.
A tin-free, self-polishing antifouling. It prevents marine organisms from attaching to the hull while reducing friction, contributing to fuel efficiency and a long service life. The film wears away in a controlled way while the boat is moving, providing a continuously active surface throughout the season.
Technical Data
BINDER
Self-polishing copolymer resin
COMPONENTS
Single-component (1K)
POSITION IN SYSTEM
Antifouling topcoat
THEORETICAL COVERAGE
6 m²/kg (single coat)
THINNING
Gen Antifouling Thinner
APPLICATION METHOD
Brush, roller, spray
SURFACE PREPARATION
Clean, dry surface prepared with a suitable primer / tie coat
NUMBER OF COATS
Min. 2 coats; extra coat at waterline, keel and rudder leading edges
COMPATIBLE PRODUCTS
402, 401, 409, 424
COVERAGE
—
COVERAGE
—
COVERAGE
—
DRYING
Touch dry 3 h · Recoat 8 h · Launch after min. 12–24 h (20 °C, 65% RH)
PACKAGING
—
COLOUR
Red, Brown, Jet Black
TECHNICAL DOCUMENTS
Use and Application
AREAS OF USE
Underwater surfaces of fibreglass (GRP), wooden and steel boats; yachts and boats in marina and offshore conditions; to prevent fouling by marine organisms, algae and barnacles.
SURFACE PREPARATION AND APPLICATION
On new GRP boats, remove mould release agent residues with a suitable surface cleaner and abrade to a matt finish. On previously antifouled surfaces, wash with high-pressure fresh water, scrape off loose and flaking paint, and make sure the surface is dry, clean and grease-free. Over an antifouling of unknown compatibility, apply 424 Underwater Sealer as an isolating coat. Stir thoroughly before use and apply at least two coats by brush, roller or spray. 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
— Tin-free (TBT-free) and cybutryne-free formula
— Self-polishing film
— Low friction for better fuel efficiency
— IMO AFS 2001 compliant, Turkish Lloyd certified
SYSTEM RECOMMENDATION
PRIMER
GRP: 402 Osmo Shield or 401 Epoxy Primer + 409 Vinyl Tie Coat · Old antifouling: 424 Underwater Sealer