Fibreglass and osmosis prevention
See "Antifouling your boat", "Painting and Varnishing above the Waterline" for surface preparation and application advice.
Below the waterline
Pre-treatment:
Degrease using SEAJET BOATWASH. Rinse with fresh water.
Key the surface and flatten back with P120-P180 abrasive paper.
Brush off dust and use lint free tack rags to remove remaining traces of dust.
| No. of Coats | Product name | Coating interval at 10°C min/max | Thinner/ Cleaner | Abrasive Paper | Comments |
| 1 | SEAJET 117 Epoxy Primer | 18hrs/3 days | Thinner E | None | |
| Or | |||||
| 1 | SEAJET 011 Underwater Primer | 4hrs/7 days | Thinner A | None | |
| Then | |||||
| 1-2 | Seajet Anti-fouling | 8 hrs/None | Thinner A | None | |
| Leave 18 hours before launching | |||||
| |||||
| 3-4 | SEAJET 117 Epoxy Primer or | 18hrs/72 hrs | Thinner E | None | |
Then 2 |
Seajet Anti-fouling |
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 | | | | ||
| When using SEAJET 118, apply a thin coat of SEAJET 117 before applying the anti-fouling. | |||||
| Leave 18 hours before launching. Maximum interval before launching is 6 months. | |||||
Above the waterline
Pre-treatment:
Degrease using SEAJET BOATWASH. Rinse with fresh water.
Flatten back with P180–P280 abrasive paper.
Brush off dust and use lint free tack rags to remove remaining traces of dust.
| No. of Coats | Product name | Coating interval at 10°C min/max | Thinner/ Cleaner | Abrasive Paper | Comments |
| 1 | SEAJET Universal Primer Undercoat | 24 hrs/14 days | Thinner U | 320 dry | Use this primer when an undercoat is required |
| Then | |||||
| 2–3 | SEAJET Brilliance Topcoat | 24 hrs/None | Thinner U | 400 wet or finer | |
Or two component, high performance finish over bare fibre-glass | |||||
| 1 | SEAJET 117 Multipurpose Epoxy | 18 hrs/7 days | Thinner E | 320 dry | Use this primer when an undercoat is required |
| Then | |||||
| 2–3 | SEAJET 132 Polyurethane Topcoat | 12 hrs/None | Thinner P | 400 wet or finer | |
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