What SEAJET SAIKO is and why choose it
SEAJET 027 SAIKŌ is a copper free, self polishing antifouling paint based on a unique hydrolysing resin. It delivers excellent long term protection against fouling, including slime, through co-biocides and an active hydrolysis polymer that optimises leaching of active ingredients. Available in bright colours including white, it is suitable for all properly primed substrates, including aluminium hulls, GRP, wood and steel.
Main features
- Copper free antifouling – compatible with aluminium hulls and other substrates when correctly primed.
- Self polishing technology – controlled hydrolysis keeps the surface clean and maintains performance over time.
- Effective against slime – co-biocides provide strong protection in fouling-intensive waters.
- Wide colour range – White, Navy Blue, Black and Platinum Grey, with slight colour change possible on immersion.
- Versatile application – can be applied by brush, roller or spray (spray for professional use only) on suitably primed GRP, wood, steel and aluminium.
- User friendly one-pack system – one component product, easy stirring before use, no pot life limitations.
- Controlled film build – recommended dry film thickness of 40 µm per coat, based on roller application.
- Marine-grade formulation – designed as PT21 antifouling paint and compliant with IMO AFS convention (no organotin biocides).
Technical specifications
- Product type: Copper free, self polishing antifouling paint (one-pack).
- Brand: Seajet.
- Product code: 627RR (SEAJET 027 SAIKŌ).
- Colour options: White, Navy Blue, Black, Platinum Grey.
- Volume solids: 40% ±2.
- VOC (theoretical): 517 g/l.
- Flash point: 25°C (ISO13736).
- Mixing ratio: One Pack Product; stir thoroughly to a uniform consistency before use.
- Recommended film thickness per coat: 100 µm wet / 40 µm dry (values based on roller application).
- Theoretical spreading rate: 10.0 m²/l at 40 µm DFT (roller application).
- Application methods: Brush, roller, spray (airless spray for professional use only).
- Recommended thinner: SEAJET THINNER A.
- Spray equipment (airless):
- Nozzle tip: Graco 619, 721.
- Paint output pressure: 12.0 – 15.0 MPa.
- Thinning for spray: 0 – 5% by volume with SEAJET THINNER A.
- Application conditions:
- Ambient temperature: min. 5°C – max. 35°C.
- Substrate temperature: min. 7°C – max. 35°C.
- Product temperature: min. 5°C – max. 35°C.
- Maximum relative humidity: 85% RH.
- Suitable substrates: Suitably primed GRP (polyester), wood, steel and aluminium.
- Recommended primers: SEAJET 015 UNDERWATER PRIMER, SEAJET 117 MULTIPURPOSE EPOXY PRIMER.
- Maximum time to immersion after application: 3 months.
- Drying and overcoating times at 40 µm DFT (approximate):
- 5°C: Surface dry 3 h; hard dry 6 h; minimum overcoat 8 h; no maximum; minimum time to launch 16 h.
- 10°C: Surface dry 2 h; hard dry 5 h; minimum overcoat 7 h; no maximum; minimum time to launch 12 h.
- 20°C: Surface dry 1 h; hard dry 4 h; minimum overcoat 6 h; no maximum; minimum time to launch 10 h.
- 30°C: Surface dry 30 min; hard dry 3 h; minimum overcoat 5 h; no maximum; minimum time to launch 8 h.
- Pack sizes: 0.75 L, 2.5 L, 5 L, 20 L.
- Shelf life: Minimum 2 years at 20°C (unopened containers, stored correctly).
- Storage conditions: Store in a dry, cool and well-ventilated area, away from direct sunlight and sources of ignition. Keep containers tightly closed and upright. Handle with care.
Surface preparation and application guidance
Surface preparation
- Over existing antifouling:
- Wash with high pressure fresh water (approx. 200 bar) to remove fouling and salt.
- Remove any antifouling in poor condition.
- If existing antifouling is sound, consult SEAJET antifouling compatibility table (Consultar ficha técnica del fabricante.).
- Ensure the surface is dry and free from contaminants such as salt, grease or oil; degrease if required.
- Antifoulings should only be wet sanded or chemically stripped. Never burn off or dry sand old antifoulings.
- GRP / Steel: Sand with P100 abrasive paper, remove all dust and apply SEAJET 117.
- Wood: Sand with P100 abrasive paper, remove all dust and apply SEAJET 015.
- Aluminium: Sand with P100 abrasive paper, remove all dust and apply SEAJET 117.
Number of coats and film build
- Apply two full coats of SEAJET 027 SAIKŌ.
- Apply an additional coat on leading edges, waterline, rudders and stern gear for extra protection.
- Film thickness and coverage depend on application method; values are based on roller application.
- When applying by brush, additional coats may be needed to achieve the specified dry film thickness.
Important application notes
- Mix batches of the same colour before use to minimise colour differences between lots.
- On immersion the colour may show a slight change.
- Ensure adequate ventilation during application and drying.
- Before overcoating, check that the previous coat is completely dry.
- Drying and overcoating intervals increase with higher film thickness.
Applications and use cases
- Leisure yachts and motorboats – GRP, wood, steel or aluminium hulls requiring long-lasting fouling protection.
- Aluminium craft – fast boats, RIBs with aluminium hulls or structures where copper-based antifoulings are not suitable.
- Commercial and working boats – properly primed steel and aluminium vessels needing reliable antifouling with self polishing performance.
- High fouling waters – marinas, estuaries and coastal waters where slime and marine growth are a persistent issue.
- Refit and maintenance – overcoating sound existing antifouling systems after appropriate preparation.
FAQ
1. What type of antifouling is SEAJET 027 SAIKŌ?
It is a copper free, self polishing antifouling paint based on a unique hydrolysis resin with co-biocides, designed for long term protection against fouling including slime.
2. On which substrates can I use SEAJET 027 SAIKŌ?
It can be used on suitably primed GRP (polyester), wood, steel and aluminium using the recommended SEAJET primers.
3. Is it suitable for aluminium hulls?
Yes. The formulation is copper free and can be used on correctly primed aluminium surfaces.
4. How many coats should I apply?
Apply two full coats, plus an extra coat on leading edges, waterline, rudders and stern gear.
5. What is the recommended film thickness and coverage?
The recommended thickness per coat is 100 µm wet and 40 µm dry, giving a theoretical spreading rate of 10.0 m²/l at 40 µm DFT when applied by roller.
6. How long can the boat stay on the hard after painting before launching?
The maximum time to immersion after application is 3 months, provided the system is correctly applied and stored.
7. Which thinner should I use?
Use SEAJET THINNER A for thinning and equipment cleaning. For spray application, thinning up to 0–5% by volume may be used.
8. At what temperatures can I apply the product?
Apply with ambient temperatures between 5°C and 35°C, substrate temperature between 7°C and 35°C, and product temperature between 5°C and 35°C. Maximum relative humidity is 85%.
9. How should I store unused SEAJET 027 SAIKŌ?
Store in tightly closed containers in a dry, cool and well ventilated place, away from direct sunlight and all sources of ignition. Under these conditions the shelf life is at least 2 years at 20°C.
10. Is the product flammable?
Yes. It is classified as a flammable liquid (Flam. Liq. 3) with a flash point of 25°C. Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
Section 14 – Transport information
- UN number / ID number: UN 1263.
- Proper shipping name: PAINT.
- Transport hazard class: Class 3 (flammable liquids).
- Packing group: III.
- Environmentally hazardous:
- ADR / RID / ADN: Environmental hazardous substances (aquatic environment) – Yes.
- IMDG: Marine Pollutant – Yes (contains Zinc Oxide and Hydrocarbons, C10, Aromatics, <1% Naphthalene).
- IATA: Not classified as a marine pollutant, but still hazardous to the aquatic environment.
- Hazard identification number (ADR): 30.
- EmS (IMDG): F-E, S-E.
- General transport precautions:
- Always transport in securely closed containers in an upright, secure position.
- Ensure that persons transporting the product know what to do in case of accident or spillage.
- Within user premises, follow local regulations and keep away from sources of ignition.
- From the technical data sheet: the product should be transported in a closed container.
Section 8 – Personal protective measures
The following information summarises the minimum personal protection measures recommended for handling and applying SEAJET 027 SAIKŌ. Always consult the full Safety Data Sheet before professional use.
8.1 Respiratory protection
- Provide adequate general and local exhaust ventilation to keep solvent vapour and spray mist below occupational exposure limits.
- If exposure may exceed limits, use a half-mask respirator to EN 140 fitted with combined particulate and vapour filters to EN 14387 with an assigned protection factor of at least 10 (e.g. A2P3).
- During spraying inside a spray booth where ventilation may be insufficient, operators should wear a compressed air-fed respirator during spraying and until solvent vapour and particulates are below exposure limits.
- Dry sanding, flame cutting or welding on the dry paint film may generate hazardous dust or fumes; use wet sanding where possible or appropriate respiratory protection.
8.2 Hand protection
Use chemical resistant gloves tested according to EN 374. No single glove material provides unlimited protection; select according to exposure time and task.
- For repeated or prolonged exposure (> 480 minutes breakthrough):
- Polyethylene (PE) gloves, minimum thickness 0.062 mm (high chemical resistance).
- For repeated or prolonged exposure (240–480 minutes):
- Polyethylene (PE) gloves, minimum thickness 0.062 mm.
- Butyl/Viton gloves, minimum thickness 0.70 mm.
- For repeated or prolonged exposure (120–240 minutes):
- Polyethylene (PE) gloves, minimum thickness 0.062 mm.
- Butyl/Viton gloves, minimum thickness 0.70 mm.
- For short term exposure / splash protection (60–120 minutes):
- Polyethylene (PE) gloves, minimum thickness 0.062 mm.
- PVA gloves, thickness 0.2–0.3 mm.
- Butyl/Viton gloves, thickness 0.70 mm.
- Nitrile gloves, thickness approx. 0.31 mm (good for spray application).
- For short term exposure / splash protection (10–30 minutes):
- Polyethylene (PE) gloves, minimum thickness 0.062 mm.
- PVA gloves, thickness 0.2–0.3 mm.
- Butyl/Viton gloves, thickness 0.70 mm.
- Neoprene gloves, thickness <0.4 mm.
- Nitrile gloves, thickness 0.175 mm.
- Gloves not suitable (permeation <10 minutes, non-exhaustive):
- Natural rubber gloves, thickness 0.75 mm.
- Certain nitrile and neoprene gloves of 0.75 mm or less, and butyl gloves of 0.50 mm.
- Use PE gloves as under-gloves for difficult situations such as high exposure or unknown chemical composition.
- Replace gloves regularly and immediately if damaged; follow glove manufacturer’s instructions for use, storage and maintenance.
8.3 Eye and face protection
- Wear safety goggles or face shield complying with EN 166, designed to protect against liquid splashes.
8.4 Skin and body protection
- Wear antistatic protective clothing made of natural fibre or high temperature resistant synthetic fibre.
- Avoid skin contact; use barrier creams only on clean skin and never after exposure.
8.5 General hygiene and environmental measures
- Observe all precautionary statements on the container.
- Provide good ventilation in work areas.
- Avoid breathing vapours or spray mist and avoid contact with skin and eyes.
- Do not eat, drink or smoke in the application area.
- Do not allow the product or washings to enter drains or watercourses; collect spills with suitable absorbent material.
*Contenido generado por IA
