Antifouling Guide
Background
Since January 1, 2025, the ChemBiozidDV has been in force – it regulates the sale of conventional antifoulings that contain biocides. We will inform you about the new purchasing process, the correct application, and alternative antifouling solutions.
Biocidal Antifoulings: Advantages and Risks
The growth of algae, slime, and mussels on the underwater hull, also known as fouling, can significantly impair a boat's speed and fuel consumption. Biocidal antifoulings actively counteract this by releasing biocides such as copper, which prevent the settling of fouling by damaging or killing it. However, biocidal antifoulings not only combat algae and mussels on the hull but also harm other organisms in the waters. Furthermore, biocides are often difficult to degrade (persistent) and accumulate in the water and soil. In the long term, this leads to damage to ecosystems.
More Education Through Consultation
To reduce the discharge of biocides into the environment, the regulation introduces new legal requirements: Biocidal antifoulings may only be sold to private customers by our trained personnel and after a short consultation – whether in the store or in the online shop. The conversation only takes a few minutes and informs you about safe application, storage, and disposal – and about when a biocide-free alternative may be sensible.
Do you have questions about the ChemBiozidDV or would you like advice on antifouling?
We are happy to help you. You can reach our knowledgeable employees Monday to Friday from 9 am to 6 pm at the telephone number +49 40 88 90 10 - 80
First things first: choosing the right antifouling
Before purchasing antifouling, consider the following points:
- Fouling conditions in the area
Saltwater or brackish water areas often have a high fouling pressure, against which a biocidal antifouling works best. In inland and freshwater areas, a biocide-free alternative is usually sufficient. The Fouling Atlas of the German Environment Agency (Umweltbundesamt) provides an overview of the fouling conditions in German waters. - Regional regulations
There are waters where the use of biocidal antifoulings is prohibited. Inform yourself about possible restrictions with local port authorities, sailing clubs, or environmental protection associations. - Boat type & speed
Choose a product that suits your boat and your usage behavior. Biocidal antifoulings are categorized into three types:- Self-polishing antifouling
Ideal for slower boats, continuously releases biocides - Hard antifouling
Abrasion-resistant paint, suitable for fast boats and for boats that often dry out (take the ground) - Thin-film antifouling
Achieves a particularly smooth surface that minimizes friction and fouling
- Self-polishing antifouling
- Compatibility with existing coatings
Before changing products, check the compatibility between the old and new antifouling. If compatibility is unclear, a layer of barrier primer usually helps as a tie-coat. - Environmentally friendly alternatives without biocides
Biocide-free underwater paints function similarly to conventional hard or self-polishing antifoulings; instead of biocides, they contain alternative active ingredients such as hydrogel or zinc oxide to protect the surface from fouling. Silicone or epoxy resin-based underwater coatings often last several seasons. They form a smooth, water-repellent surface that is easy to clean.
Apply antifouling safely
1. Preparation
- Read application information on the label or in the product data sheet
- Only work in well-ventilated rooms or outdoors on a hard, impermeable floor
- Lay down a sheet to catch paint splatters and dust
- When sanding, enclose the underwater hull with plastic sheeting to minimize dust dispersal
2. On the job
- Wear a protective suit, gloves, safety glasses, and mask
- Perform dust-intensive hand sanding only with adequate extraction
- Keep away ignition sources (open fire, heat, hot surfaces)
- Do not eat, drink, or smoke while working
- Collect spilled quantities and dispose of them properly
- In case of skin contact, wash off quickly with warm soapy water
- In case of eye contact, rinse with water for several minutes and immediately call a doctor or the poison control center
3. Storage & disposal
- Seal opened containers airtight
- Keep out of reach of children
- Store protected from frost and direct sunlight at 5 - 25 °C
- Dispose of paint residues & empty cans properly at the recycling center; do not throw them into general waste
Self-erosion antifouling paints
Self-eroding antifoulings have a soluble resin system with active ingredients that repel or inhibit fouling. After activation in the water, the antifouling layers are controlledly degraded, ensuring a fresh and active layer with biocides is always on the surface. This results in high effectiveness during the sailing season, a smooth surface, and reduces the build-up of thick antifouling layers on the hull. For the next season, the new coat can be applied directly after a thorough cleaning and without intermediate sanding.
EPIFANES COPPER CRUISE is a highly efficient antifouling containing copper and biocides with a self-polishing effect and excellent long-term fouling protection in fresh, brackish and salt water. Copper release technology combines the advantages of hard antifouling and self-polishing antifouling with significantly improved fouling protection. Compared to conventional copper-containing antifoulings, the active ingredients are optimized and released in much smaller quantities, which benefits the environment.Can be easily applied to most commercially available underwater primers, as well as hard and self-polishing antifoulings. Suitable for all sailing and motor boats with a maximum speed of 30 knots and for all boat building materials except aluminum. Not suitable for long-term moorings that are not moved or only moved a little throughout the season. This antifouling has a Dutch approval (approval no. 14301). Technical dataArea of application: Waters with medium to heavy foulingBoat type: motor and sailing boats up to 30 knotsSubstrate: all materials except aluminumCoverage: approx. 10 m²/lDilution: Not recommended, max. 2-3 % with EPIFANES Thinner D-100Application method: Brush, rollerDrying times at 20°C: Dust-dry: approx. 30 min., recoatable: after approx. 8 hoursService life (time between painting and wetting) at 20°C: min. 24 hours to 1 monthFor information on processing, please refer to the technical data sheet under "Downloads". 
Very effective, self-polishing antifouling, even in difficult fouling conditions.Suitable for all boat building materials except aluminum. Adheres to most hard and self-polishing antifoulings (not to those containing Teflon). Sanding before the next coat is not necessary. 2-3 coats last for 2 seasons.Technical dataArea of application: Waters with medium foulingBoat type: motor and sailing boats up to 40 knotsSubstrate: all materials except aluminumCoverage: approx. 8.8 m²/lDilution: SEAJET THINNER AApplication method: Brush, roller, spraying (professional use only)Drying times at 10°C: Dust-dry: approx. 2 hours, recoatable: after approx. 8 hoursTtime between painting and launching at 10°C: min. 18 hours to 6 monthsFor information on processing, please refer to the technical data sheet under "Downloads".
HEMPEL'S Mill NCT self-polishing premium antifouling has a highly effective fouling protection thanks to copper compounds and organic active ingredients.NCT technology (NewCopperTechnology) makes it possible to use the copper compounds in an even more controlled and continuous manner, making them even more economical and effective.The self-sanding effect of the antifouling always ensures a smooth, low-friction and bioactive surface and it does not need to be sanded before a subsequent coat.Suitable for all boat building materials (except aluminum) and for use in all waters.Technical DataArea of application: Waters with medium to heavy foulingBoat type: motor and sailing boatsSubstrate: all materials except aluminumCoverage: approx. 14 m²/lDilution: HEMPEL THINNER 808Application method: Brush, rollerDrying times at 10°C: Surface dry: 4 hours, recoatable: after approx. 8 hoursRefloating time (time between painting and launching) at 10°C: min. 24 hours to 9 months Further information on application can be found in the technical data sheet under “Downloads”.
Self-polishing, economic bottom paint used in commercial shipping, particularly suitable for use in offshore waters with high fouling pressure.Ecofleet 290 S contains bioactive organic biocides and copper compounds, which are released in a controlled and effective manner through the continuous polishing rate. It therefore offers effective protection against fouling for 36 - 60 months (depending on sailing style and routes). Complies with the IMO Antifouling Systems Convention.Can be applied to most hard and self-polishing antifoulings (not to PTFE-containing antifoulings).Technical dataArea of application: Waters with heavy fouling, offshoreType of boat: Commercial vessels and slow-moving vessels, multihullsSubstrate (primed): all materials except aluminumCoverage (theoretical): 7,3 m²/l at 75 µm (spray application), 11 m²/l at 50 µm (roller application)Dilution: SIGMA 21-06 (max. 3% recommended)Application method: Spray gun (new coating), brush, roller (touch-ups)Drying times at 10°C: Recoatable: after approx. 10 hours.Standing time (time between painting and wetting) at 10°C: at least 12 hours.For information on application, please refer to the technical data sheet under "Downloads".
Reliable, self-polishing antifouling with copper compounds and organic, bioactive substances for northern European coastal and inland waters. Thanks to the self-eroding surface, the bioactive substances can always develop their optimum effect over the entire service life of the coating and it does not need to be sanded before a new coat is applied. Cannot be applied to Teflon-based coatings.YACHTCARE ANTIFOULING SP is compatible with most antifouling systems and is suitable for all boat types and boat building materials except aluminum. Technical dataArea of application: Waters with medium to heavy foulingBoat type: Motor and sailing boats with medium speedSubstrate (with appropriate primer): all materials except aluminum, check existing coatings for compatibility before applicationCoverage: approx. 12.7 m²/lDilution: YACHTCARE ANTIFOULING THINNERApplication method: Brush, roller, spraying (professional use only)Drying times at 20°C: Recoatable: after approx. 6 hoursFurther information on processing can be found in the technical data sheet under “Downloads”.
SEAJET PROFESSIONAL 032 is an economical, self-polishing antifouling with copper compounds as the active ingredient. This antifouling was developed for small commercial and work boats and traditional sailing boats in salt, brackish and fresh water areas.Suitable for all boat building materials except aluminum. No sanding required before a subsequent coat.Current delivery information: The container size 3.5l has been discontinued, the product is still available in 5l containers. Technical DataArea of application: Waters with medium foulingBoat type: motor and sailing boats up to 40 knotsSurface: all materials except aluminumCoverage: approx. 8.7 m²/lDilution: SEAJET THINNER AApplication method: Brush, roller, spraying (professional use only)Drying times at 10°C: Dust-dry: approx. 2 hours, recoatable: after approx. 7 hoursTime between painting and wetting at 10°C: min. 16 hours to 6 monthsFor information on processing, please refer to the technical data sheet under "Downloads".
HEMPEL'S ECOPOWER PROP Spray is a biocide-free spray paint for coating propellers, Z-drives and stern drives. Protects against fouling and facilitates cleaning. An advanced binder technology controls the self-renewing effect over the entire season.For use on uncoated surfaces, priming with HEMPEL'S Prop Primer is recommended.For existing, old or traditional antifouling, remove loose material and fouling beforehand. On surfaces with existing, old hard matrix or unknown antifouling, the surface should also be wet-sanded (180 grit). Then clean and dry the surface. If the condition of the previous antifouling layer is poor, seal with a layer of primer (e.g. HEMPELS Prop Primer).Note: The effectiveness of biocide-free underwater coatings depends on the area of operation and the boat's sailing characteristics. Regular inspection of the hull during the season is recommended. Any fouling that occurs can be minimized by gentle cleaning with a sponge or soft brush.Technical dataArea of application: Waters with light to medium fouling conditionsBoat type: motor and sailing boats Surface: all materials, including aluminumSuitable primer: HEMPEL'S Underwater Primer or HEMPEL'S Prop PrimerCoverage: approx. 11 m²/lDilution: noneApplication method: SprayingDrying times at 10°C: Hand dry: 30 minutes, recoatable: n.a.Refloation time (time between painting and launching) at 10°C: min. 24 hours to 1 monthFurther application information can be found in the technical data sheet under “Downloads”.
Content: 0.5 Liter (€0.00 / 1 Liter)
EPIFANES FOUL-AWAY is a self-polishing, biocide-free underwater ship paint. Suitable for freshwater, brackish water and occasional saltwater areas. Suitable for all boat building materials. Adheres to all hard antifoulings and self-polishing antifoulings. Three coats are recommended for the first application.Note: The effectiveness of biocide-free underwater coatings depends on the area of operation and the boat's sailing characteristics. Regular inspection of the hull during the season is recommended. Any fouling that occurs can be minimized by gentle cleaning with a sponge or soft brush.Technical DataArea of use: Freshwater areas and temporary exposure in brackish and saltwaterBoat type: Sailing and motorboats Substrate(with suitable primer): Wood, steel, GRP, aluminium, existing hard or self-polishing antifoulingsPrimer: EPIFANES Interimcoat or EPIFANES Underwater PrimerCoverage: 10 m²/l at 50 µm dry film thicknessThinner: EPIFANES Thinner D-100Application method: Brush, roller, sprayDrying times: Dust dry after 1 hr at 20 °C; recoatable after 6 hrsRefloating time (time between painting and launching): 24 hrs to 6 monthsFurther information on processing can be found in the technical data sheet under "Downloads".
High-performance, self-polishing antifouling. Excellent fouling protection thanks to HEMPEL's patented binder technology.Especially for aluminum boats, but can also be used for boats made of GRP, wood, steel and drives. Can be applied with a roller or brush. Technical dataArea of application: Waters with medium to heavy foulingBoat type: Motor and sailing boatsSubstrate (with suitable primer): all materials, including aluminumSuitable primer: HEMPEL'S Underwater Primer, HEMPEL'S Light PrimerCoverage: approx. 13 m²/lThinner: HEMPEL THINNER 808Application method: Brush, rollerDrying times at 10°C: Surface dry: 8 hours, recoatable: after approx. 7 hoursRefloating time (time between painting and launching) at 20°C: min. 24 hours to 9 months For information on application, please refer to the technical data sheet under “Downloads”.
Content: 0.5 Liter (€0.00 / 1 Liter)
SEAJET 031 SAMURAI is a slow-eroding antifouling with good all-round performance for waters with medium fouling conditions. It is suitable for all boatbuilding materials except aluminum and adheres to most hard and self-polishing antifoulings (not to Teflon and tin-containing antifoulings).Technical dataArea of application: Waters with medium foulingBoat type: motor and sailing boats up to 40 knotsSubstrate: all materials except aluminum (with suitable primer)Coverage: approx. 9 m²/lDilution: SEAJET THINNER AApplication method: Brush, roller, sprayingDrying times: Dust-dry: approx. 2 hours, recoatable: after approx. 6 hoursService life (time between painting and wetting): min. 24 hours to 6 monthsInformation on Application can be found in the technical data sheet under "Downloads".
SEAJET Emperor 034 A is a slowly eroding (=self-polishing) antifouling that contains no copper and is therefore also suitable for aluminum hulls. Its effective formulation makes it suitable for use in tropical saltwater areas with high fouling pressure.Technical dataArea of application: Waters with heavy foulingBoat type: motor and sailing boats up to 40 knotsSubstrate: all materials, including aluminum (with suitable primer)Coverage: approx. 10 m²/lDilution: SEAJET THINNER AApplication method: Brush, roller, sprayingDrying times: Dust-dry: approx. 3 hours, recoatable: after approx. 12 hoursTime between painting and wetting: min. 24 hours to 6 monthsFor further application information, please refer to the technical data sheet under "Downloads".
Hard antifouling paints
HEMPEL'S HARD RACING TECCEL is a highly effective premium hard antifouling with copper compounds as the active ingredient, which offers optimum fouling protection due to the hard binder, especially on fast motorboats, trailer boats and boats that fall dry in the mudflats. Suitable for waters with high fouling pressure. Modified with TecCel anti-adhesion technology (PTFE), it is smoother and has less friction than conventional hard antifoulings. Can be painted on all hull materials except aluminium (exception: white colour).Technical DataArea of use: For waters with heavy fouling pressureBoat type: For high-performance boats and racing yachtsSubstrate: GRP, wood, plywood, steel; not suitable for aluminium, existing hard antifoulings in good conditionPrimer: HEMPEL LIGHT PRIMER, HEMPEL UNDERWATER PRIMERCoverage: 13 m²/lThinner: Hempel's Thinner 808Application method: Brush, roller, paint padDrying times: Touch dry after 30 min at 10 °C; recoatable after 8 hrs at 10 °CRefloating time (time between painting and launching): 24 hrs to 9 monthsFurther information on application can be found in the technical data sheet under "Downloads".
HEMPEL'S Ecopower Racing is a biocide-free, hard underwater hull paint with Teccel anti-adhesion technology (PTFe) for a particularly smooth and low-friction surface.Recommended for all waters with light fouling pressure and for all waters with high environmental requirements. Suitable for all boat building materials.Note: The effectiveness of biocide-free underwater coatings depends on the area of operation and the boat's sailing characteristics. Regular inspection of the hull during the season is recommended. Any fouling that occurs can be minimized by gentle cleaning with a sponge or soft brush.Technical dataArea of use: For waters with light fouling pressureBoat type: For fast sailing and motorboatsSubstrate (with suitable primer): GRP, wood, plywood, aluminium, steel; existing hard antifoulings in good condition Primer: HEMPEL Light Primer, HEMPEL Underwater PrimerCoverage: 12 m²/lThinner: Hempel's Thinner 808Application method: Brush, roller, paintDrying times: Touch dry after 30 min at 10 °C; recoatable after 8 hrs at 10 °CRefloating time (time between painting and launching): 24 hrs to 9 monthsFurther information on application can be found in the technical data sheet under “Downloads”.
SEAJET 037 COASTAL is a hard antifouling with a hard matrix that is particularly suitable for fast boats and coastal areas where boats can fall dry. Also suitable for salt and fresh water areas. Can be applied to all boatbuilding materials (except aluminum). 2-3 coats are recommended as a base coat.Technical dataArea of application: Waters with medium foulingBoat type: motor and sailing boats up to 70 knotsSubstrate: all materials except aluminum (with appropriate primer)Coverage: approx. 10 m²/lThinner: SEAJET THINNER AApplication method: Brush, roller, spraying (professional use only)Drying times at 10°C: Dust-dry: approx. 4.5 hours, recoatable: after approx. 9 hours.Time between painting and wetting at 10°C: at least 10 hours.For processing information, please refer to the technical data sheet under "Downloads".
YACHTCARE ANTIFOULING ACTION is an economical and effective hard antifouling with copper compounds as the active ingredient and an insoluble binder. This provides very good fouling protection especially for fast motorboats, trailer boats, and boats that dry out in tidal flats. Developed for Northern European inland and coastal waters. It can be used on all primed surfaces and boat materials except aluminum.Technical DataApplication area: For all Northern European inland and coastal waters with moderate fouling pressure; not recommended for warm watersBoat type: For sailing and motorboats, especially suitable for fast motorboats, trailer boats, and boats in dry marinasSubstrate: GRP, steel, wood; not on aluminumPrimer: YACHTCARE Epoxy Primer (Art.No. 2520-014) or YACHTCARE Antifouling Primer (Art.No. 2520-012)Coverage: approx. 13 m²/lThinner: YACHTCARE ANTIFOULING THINNER (Art.No. 2520-009), (5–10% optional)Application method: Brush, mohair rollerDrying times: Recoatable after 6 hrs at 20 °CPot life (time between painting and launching): 24 hrs to 6 months
Thin-film antifouling coatings
HEMPEL'S Hempaspeed TF is a hard, biocide-free thin-layer coating for all sports boats with GRP, steel or aluminum hulls, including regatta and trailer boats. Thanks to the special hydrogel technology, it forms an ultra-smooth surface that minimizes fouling and also reduces friction. Suitable for fresh, salt and brackish water as well as inland areas. Particularly recommended in areas where the use of biocides is prohibited or restricted (also in the Netherlands). Application on existing antifouling layer: It is possible to switch from a conventional antifouling to Hempaspeed TF. The old coating (if still intact) does not need to be removed. A coat of HEMPEL Conversion Primer should be applied as an adhesion primer, followed by two coats of Hempaspeed TF.Application as a new coating: When applying a new coating, the substrate must first be sealed with HEMPEL Light Primer before applying HEMPEL Conversion Primer and two coats of Hempaspeed TF.Note: The effectiveness of biocide-free underwater coatings depends on the area of operation and the boat's sailing characteristics. Regular inspection of the hull during the season is recommended. Any fouling that occurs can be minimized by gentle cleaning with a sponge or soft brush.Technical DataArea of use: For fresh and saltwater with medium fouling; mechanical cleaning may be necessary in high fouling areasBoat type: For sport and racing boats, suitable for high-speed vesselsSubstrate: GRP, steel, aluminium; suitable over existing antifouling in good conditionPrimer: HEMPEL Conversion PrimerCoverage: 11 m²/lThinner: HEMPEL'S Thinner 808Application method: Brush, roller, airless spray (professional use)Drying times: Touch dry after 30 min at 10 °C; recoatable after 8 hrs at 10 °CRefloating time (time between painting and launching): 24 hrs to 3 monthsFurther information on processing can be found in the technical data sheet under “Downloads”.
Very smooth and extremely fast-drying thin-layer antifouling with PTFE anti-adhesion technology and copper oxides as biocidal active ingredients.For medium fouling conditions in salt water, brackish water, fresh water and lakes. Can be applied to all epoxy underwater primers and is compatible with PTFE thin-film antifoulings such as VC 17m and Hempel Waterglide.Before applying SEA-LINE THIN FILM to an already painted surface, please refer to the compatibility table. Do not use on aluminum or zinc surfaces. Technical DataArea of application: Waters with medium foulingBoat type: motor and sailing boats up to 40 knotsSubstrate: all materials except aluminumCoverage: approx. 11-12 m²/lDilution: Not recommendedApplication method: Brush, roller, spraying (professional use only)Drying times at 15°C: Dust-dry: approx. 30 minutes, recoating interval: min. 10 hoursRefloating (time between painting and launching) at 15°C: 3 hours to 6 months Further application information can be found in the technical data sheet under “Downloads”.
Biocide-free underwater paints and coatings
Biocide-free underwater paints and coatings are primarily suitable for inland waters with low fouling pressure and for areas where a ban on biocidal antifoulings is in place. In other waters, such as the North and Baltic Seas, one must anticipate that fouling may adhere more readily than with biocidal antifoulings. Regular inspection of the hull during the season and cleaning with a sponge help to minimize any emerging fouling.
HEMPEL'S Hempaspeed TF is a hard, biocide-free thin-layer coating for all sports boats with GRP, steel or aluminum hulls, including regatta and trailer boats. Thanks to the special hydrogel technology, it forms an ultra-smooth surface that minimizes fouling and also reduces friction. Suitable for fresh, salt and brackish water as well as inland areas. Particularly recommended in areas where the use of biocides is prohibited or restricted (also in the Netherlands). Application on existing antifouling layer: It is possible to switch from a conventional antifouling to Hempaspeed TF. The old coating (if still intact) does not need to be removed. A coat of HEMPEL Conversion Primer should be applied as an adhesion primer, followed by two coats of Hempaspeed TF.Application as a new coating: When applying a new coating, the substrate must first be sealed with HEMPEL Light Primer before applying HEMPEL Conversion Primer and two coats of Hempaspeed TF.Note: The effectiveness of biocide-free underwater coatings depends on the area of operation and the boat's sailing characteristics. Regular inspection of the hull during the season is recommended. Any fouling that occurs can be minimized by gentle cleaning with a sponge or soft brush.Technical DataArea of use: For fresh and saltwater with medium fouling; mechanical cleaning may be necessary in high fouling areasBoat type: For sport and racing boats, suitable for high-speed vesselsSubstrate: GRP, steel, aluminium; suitable over existing antifouling in good conditionPrimer: HEMPEL Conversion PrimerCoverage: 11 m²/lThinner: HEMPEL'S Thinner 808Application method: Brush, roller, airless spray (professional use)Drying times: Touch dry after 30 min at 10 °C; recoatable after 8 hrs at 10 °CRefloating time (time between painting and launching): 24 hrs to 3 monthsFurther information on processing can be found in the technical data sheet under “Downloads”.
EPIFANES FOUL-AWAY is a self-polishing, biocide-free underwater ship paint. Suitable for freshwater, brackish water and occasional saltwater areas. Suitable for all boat building materials. Adheres to all hard antifoulings and self-polishing antifoulings. Three coats are recommended for the first application.Note: The effectiveness of biocide-free underwater coatings depends on the area of operation and the boat's sailing characteristics. Regular inspection of the hull during the season is recommended. Any fouling that occurs can be minimized by gentle cleaning with a sponge or soft brush.Technical DataArea of use: Freshwater areas and temporary exposure in brackish and saltwaterBoat type: Sailing and motorboats Substrate(with suitable primer): Wood, steel, GRP, aluminium, existing hard or self-polishing antifoulingsPrimer: EPIFANES Interimcoat or EPIFANES Underwater PrimerCoverage: 10 m²/l at 50 µm dry film thicknessThinner: EPIFANES Thinner D-100Application method: Brush, roller, sprayDrying times: Dust dry after 1 hr at 20 °C; recoatable after 6 hrsRefloating time (time between painting and launching): 24 hrs to 6 monthsFurther information on processing can be found in the technical data sheet under "Downloads".
HEMPEL'S Ecopower Racing is a biocide-free, hard underwater hull paint with Teccel anti-adhesion technology (PTFe) for a particularly smooth and low-friction surface.Recommended for all waters with light fouling pressure and for all waters with high environmental requirements. Suitable for all boat building materials.Note: The effectiveness of biocide-free underwater coatings depends on the area of operation and the boat's sailing characteristics. Regular inspection of the hull during the season is recommended. Any fouling that occurs can be minimized by gentle cleaning with a sponge or soft brush.Technical dataArea of use: For waters with light fouling pressureBoat type: For fast sailing and motorboatsSubstrate (with suitable primer): GRP, wood, plywood, aluminium, steel; existing hard antifoulings in good condition Primer: HEMPEL Light Primer, HEMPEL Underwater PrimerCoverage: 12 m²/lThinner: Hempel's Thinner 808Application method: Brush, roller, paintDrying times: Touch dry after 30 min at 10 °C; recoatable after 8 hrs at 10 °CRefloating time (time between painting and launching): 24 hrs to 9 monthsFurther information on application can be found in the technical data sheet under “Downloads”.
Current delivery information: Unfortunately, this product is no longer available. However, you can coat LEFANT NAUTICA HARD ECO with all conventional self-polishing antifoulings from our range (biocide-containing or biocide-free). We recommend lightly roughening the surface with wet sandpaper before changing the system. NAUTICA HARD ECO is a biocide-free underwater hull coating from the Swedish company LEFANT, which is suitable for sailing and motor boats of all speed ranges. It forms a hard, polishing surface that protects the boat from fouling and is easy to clean.NAUTICA HARD ECO is suitable for use on aluminium hulls and is compatible with most self-polishing and hard antifouling. Two coats are sufficient for seasonal protection, additional coats may be required in areas of higher friction and wear such as the rudder, stern and waterline.Note: The effectiveness of biocide-free underwater coatings depends on the area of operation and the boat's sailing characteristics. Regular inspection of the hull during the season is recommended. Any fouling that occurs can be minimized by gentle cleaning with a sponge or soft brush.Technical DataArea of use: Suitable for waters with low to medium fouling pressureBoat type: For sailing and motorboats of all speed rangesSubstrate: Suitable for GRP, aluminium and most hard or semi-soft solvent-based antifoulingsPrimer: LEFANT EPOXY PRIMERCoverage: 13 m²/lThinner: NoneApplication method: Brush, rollerDrying times: recoatable after 12 hrs at 10 °CRefloating time (time between painting and launching): 24 hrs to 2 months at 20 °CFurther application information can be found in the technical data sheet under "Downloads".
SEAJET 021 is a biocide-free underwater coating that forms a hydrolysis-based, erodible layer that is constantly renewed, making it difficult for dirt and fouling to adhere. It is applied like a conventional antifouling, two coats last a season. SEAJET 021 EKO can be painted on primed wood, GRP, steel and aluminum. Suitable for boats with maximum speeds of up to 40 knots.Application: For a new coating of the underwater hull, 2 coats of SEAJET 117 Epoxy Primer (No. 2556-001) are suitable for priming, for wooden hulls SEAJET 015 (No. 2555-015) Underwater Primer. Then apply 2 coats of SEAJET 021. When applying to existing antifouling, compatibility should be checked beforehand, e.g. using the SEAJET compatibility table (can be found under "Downloads"). Clean underwater coatings in good condition, apply 1 coat of SEAJET 015 Underwater Primer, then apply 2 coats of SEAJET 021.Note: The effectiveness of biocide-free underwater coatings depends on the area of operation and the boat's sailing characteristics. Regular inspection of the hull during the season is recommended. Any fouling that occurs can be minimized by gentle cleaning with a sponge or soft brush.Technical dataArea of application: Waters with light foulingBoat type: motor and sailing boats up to 40 knotsSubstrate: all materials (with suitable primer)Coverage: approx. 10 m²/lDilution: SEAJET THINNER A (No. 2555-101)Application method: Brush, roller, spraying (professional use only)Drying times at 10°C: Dust-dry: approx. 2 hours, recoatable: after approx. 7 hours.Time between painting and launching at 10°C: min. 12 hours.For information on processing, please refer to the technical data sheet under "Downloads".
Content: 0.7519 Liter (€0.00 / 1 Liter)
HEMPEL's SILIC ONE propeller kit is an innovative, biocide-free coating for propellers with technological properties that ensure less frictional resistance and the best possible fouling protection.SILIC ONE is a copper- and biocide-free fouling release coating system based on silicone and hydrogel. Polymers in the coating react with water on the surface and form an invisible protective layer, a so-called hydrogel, between the hull surface and the water. For microorganisms, this layer is perceived as a liquid, so that they do not attach themselves to the hull in the first place. On the other hand, the micro-rough structure and the smooth surface tension prevent fouling organisms from becoming firmly anchored, so that they fall off again through manual cleaning or when moving quickly through the water.Suitable for fresh, salt and brackish water as well as inland areas. Particularly recommended in areas where biocides may not be used or only to a limited extent (also in the Netherlands).The Propller-Kit consists of:1x 375 ml SilicOne TieCoat,1x 375 ml SilicOne in blackImportant: Please note that the propeller must be free of any old paint/antifouling. We recommend that you adhere very closely to the processing instructions and recoating intervals in the application data sheet.For first time coating it is recommended to use HEMPEL Light Primer, which you have to order seperately.Note: The effectiveness of biocide-free underwater coatings depends on the area of operation and the boat's sailing characteristics. Regular inspection of the hull during the season is recommended. Any fouling that occurs can be minimized by gentle cleaning with a sponge or soft brush.Technical DataArea of use: for waters with light to medium fouling pressureBoat type: For sailing and motorboats; specifically suited for propellers and underwater fittingsSubstrate: Applicable only over HEMPEL Silic One Tiecoat; suitable for GRP and steelPrimer: HEMPEL SILIC ONE TIECOATCoverage: 10 m²/lThinner: Do not thinApplication method: Brush, rollerPot life: 60 mins at 20°COvercoating intervall: recoatable with SILIC ONE TIECOAT or itself after 16 hrs at 10°CRefloating time (time between painting and launching): 24 hrs to 1 month at 20 °C
YACHTCARE PROTECTOR HARD is a biocide-free, hard matrix bottom paint for sail and motor boats made of GRP, steel, wood or aluminum. Contains the LUBRICATOR FLUID developed by YACHTCARE, which makes it difficult for fouling to adhere to the surface.Application: For new boats, the hull should be primed accordingly, e.g. with YACHTCARE Antifouling Primer or YACHTCARE Epoxy Primer. On existing hard antifouling, the coating can be applied directly to conventional hard antifouling (not PTFE-containing) after light sanding; a conversion primer is not necessary.Note: The effectiveness of biocide-free underwater coatings depends on the area of operation and the boat's sailing characteristics. Regular inspection of the hull during the season is recommended. Any fouling that occurs can be minimized by gentle cleaning with a sponge or soft brush.Technical DataArea of use: For fresh, salt, and brackish water with low to medium fouling pressureBoat type: For sailing and motorboatsSubstrate: GRP, steel, wood, aluminium; directly over hard antifouling or with primer for new buildPrimer: Epoxy Primer or Antifouling Primer (depending on substrate)Coverage: approx. 11 m²/lThinner: Not recommendedApplication method: Brush, short-pile mohair or foam rollerDrying times: Recoatable after 6 hrs at 20 °CRefloating time (time between painting and launching): 24 hrs to 6 monthsFurther information on application can be found in the technical data sheet under "Downloads".
VENEZIANI EUROSPRINT ECO is a biocide-free, solvent-based paint for underwater hulls. Thanks to the hard matrix, it is also suitable for high sailing speeds. The paint can be applied to all substrates and is suitable for mixed and fresh waters.Note: The effectiveness of biocide-free underwater coatings depends on the area of operation and the boat's sailing characteristics. Regular inspection of the hull during the season is recommended. Any fouling that occurs can be minimized by gentle cleaning with a sponge or soft brush.Technical dataArea of application: Waters with light foulingBoat type: Motor and sailing boats of all speedsSubstrate (with appropriate primer): all materials, including aluminumCoverage: approx. 12.5 m²/lDilution: VENEZIANI Thinner 6470Application method: Brush, roller, spraying (professional use only)Drying times at 10°C: Recoatable: after approx. 18 hoursService life (time between painting and wetting) at 10°C: min. 24 hours to 6 monthsFurther information on processing can be found in the technical data sheet under "Downloads".
YACHTCARE SAFEGUARD SP is a self-polishing, biocide-free underwater coating for cruising areas with light fouling. It is suitable for sailing and motorboats made of GRP, steel, wood or aluminum. The specially developed LUBRICATOR FLUID by YACHTCARE, a special additive, makes it harder for fouling to adhere to the surface and makes cleaning easier after hauling out the boat. SAFEGUARD SP can be applied to most sanded hard and self-polishing antifoulings without the need for a bonding primer. Not suitable for application on thin-film antifoulings.Note: The effectiveness of biocide-free underwater coatings depends on the cruising area and the boat’s performance. Regular hull inspections during the season are recommended. Emerging fouling can be minimized by gentle cleaning with a sponge or soft brush.Technical Data• Application Area: Waters with light fouling• Boat Type: Sailing and motorboats up to 25kn• Substrate: all materials • Coverage: approx. 11 m²/l• Thinner: none• Application Method: Brush, mohair or foam roller• Drying Times at 20°C: Recoatable: after approx. 6 hours • Launch Time (time between painting and launching) at 10°C: min. 24 hrs to 6 months For application information, please refer to the technical data sheet under “Downloads”.
How do I find the right antifouling for my sailing area?
Every body of water has its own unique aquatic organisms. Marine growth varies depending on temperature, sunlight, salinity, currents, nutrient levels (e.g., from agricultural runoff of fertilizers), and water quality, meaning that not every antifouling works equally well in every cruising area.
How to find out which antifouling is suitable for your area
- In the TOPLICHT article information, you will find indications of the area of application for which the antifouling is suitable.
- Manufacturers also sometimes provide information.
- Ask around in your cruising area, perhaps your neighbor at the dock has a secret tip.
- The Federal Environment Agency (Umweltbundesamt) has created a Fouling Atlas and provides extensive information about antifoulings, which you can find under this link: https://www.umweltbundesamt.de/themen/chemikalien/biozide/biozidprodukte/antifouling-mittel/bewuchsatlas-start
- Separate regulations and guidelines apply to some areas in Germany and abroad. Familiarize yourself with local legislation. A current list of antifoulings approved in Holland is regularly published on the "Varen doe je Samen" page.
How much antifouling do I need?
First, you need to calculate the total surface area of your underwater hull in m² using the following formulas – or you can use our Underwater Hull Surface Calculator below.
Please note that the actual area may vary. We recommend always rounding up to the nearest full pack size.
- Full-Keel Boat: Total Surface Area m² = 0.75 x Length of Waterline x (Beam + Draft)
- Fin-Keel Boat: Total Surface Area m² = 0.50 x Length of Waterline x (Beam + Draft)
- Motorboat: Total Surface Area m² = Length of Waterline x (Beam + Draft)
The required quantity in liters can be calculated using the formula: Total Surface Area m² / Coverage Rate m²/l of the paint.
Underwater Hull Surface Calculator
How many coats of antifouling do I need to apply?
How do I renew my antifouling?
We recommend an annual renewal coat of antifouling to ensure sufficient protection against fouling. When the boat comes out of the water in autumn, the underwater hull should be cleaned as thoroughly as possible, ideally with a high-pressure cleaner.
If the surface is intact:
- Clean the surface, e.g., with HEMPEL'S Pre-Clean and fresh water, and remove any non-adherent paint (possibly lightly sand the transitions).
- Allow the underwater hull to dry.
- Apply one to two coats of the same antifouling.
If the surface is damaged:
Treat the surface with filler as follows and prime it:
- Wet sand the underwater hull with 100 – 240 grit sandpaper or dry sand using MIRKA sanding discs and a dust extraction system.
- Clean the underwater hull, e.g., with HEMPEL’s Pre-Clean and fresh water.
- Allow to dry.
- Where necessary, apply filler and primer using suitable products.
- Apply additional primer coats to smoothed and filled areas to seal the filler.
- Allow the underwater hull to dry completely before applying primer and antifouling.
- Apply one to two coats of antifouling.
If the underwater hull needs a complete new coating system:
- Sand the old antifouling completely down to the primer, or scrape off the antifouling and then sand the surface smooth.
- Clean the underwater hull, e.g., with HEMPEL’s Pre-Clean and fresh water.
- Allow to dry.
- Apply primer coats according to the product data sheets.
- Apply one to two coats of antifouling.
Roller or brush - how do I apply antifouling?
Applying antifouling with a roller is usually the fastest method for large surfaces. High-quality foam rollers or short-nap mohair rollers create a high-quality finish. Brushes are suitable for difficult and rough surfaces, as well as small repairs and hard-to-reach areas.
You can achieve an even surface by working crosswise—both horizontally and vertically—on an area that is not too large. When working with a brush, the final brushstrokes should be light and vertical. We generally recommend using high-quality rollers and brushes to prevent the rollers from swelling too quickly due to solvents and the brushes from losing bristles.
Spare rolls length 110 mm for standard roller, moltopren rollers with high surface strength, thus no blistering. 2 pieces per pack.
Professional quality. Pure, light China bristle brush, metal edge, long wood handle.
Wooden mixing sticks from EPIFANES. Available in two sizes to match the EPIFANES paint cans.
In what weather conditions can I apply antifouling?
Always observe the manufacturer's recommendations, which you can find on the product data sheets. Generally, we recommend applying antifouling at temperatures between 10 and 25 degrees Celsius. The air humidity should not exceed 65%.
Only paint your underwater hull when it is completely dry. Due to temperature fluctuations and high humidity, condensation often forms on the underwater hull in spring; in this case, you must not apply the antifouling. Also, avoid direct sunlight on the area to be painted and do not apply the antifouling in excessively windy conditions, as the solvents will evaporate too quickly in both cases, causing the paint to dry too fast and become stringy.
I have no idea what antifouling was applied to my boat.
I would like to switch to a different antifouling product. What do I need to bear in mind?
When do I need to renew my antifouling paint?
How long an antifouling remains effective cannot be answered generally, as the effectiveness depends on several factors:
- on the type of antifouling (read the recommendations in the product data sheet),
- on the applied film thickness,
- on the vessel's speed,
- on the water temperature,
- on the microorganisms present in the water,
- on the general condition of the underwater hull (does the paint adhere, is it nicely smooth).
To maintain optimal effectiveness, a new layer of antifouling should usually be applied annually. It may also be sufficient just to touch up the antifouling, as the antifouling is typically consumed fastest at the waterline, rudder, and keel.
Is a primer necessary or not?
Download our flyer & checklist
DownloadTOPLICHT tip for self-eroding antifouling:
When completely recoating the underwater hull, it is advisable, after sealing with an epoxy primer (e.g., HEMPEL Light Primer), to first apply one coat of hard antifouling, and only then apply 2 coats of self-polishing antifouling in a different color. This can save work and money, because it is only necessary to apply new self-eroding antifouling when the color of the bottom layer becomes visible.
