Antifouling International Interspeed Extra

International Interspeed Extra 0,75 ltr
International Interspeed Extra 2,5 ltr
International Interspeed Extra 0,75 ltr
International Interspeed Extra 2,5 ltr
  • Hard antifouling
  • For fresh + brackish/salty water
  • For all surfaces

Antifouling International Interspeed Extra keeps the underwater hull of your boat free from fouling and algae for a year. International's hard antifouling is suitable for use on fresh, brackish and salt water, and is suitable for sailboats and motorboats.

Interspeed extra antifouling is suitable for all surfaces, such as polyester, epoxy, steel and aluminum and can be applied up to 6 months before launching. International's antifouling is available in 4 bright colours to give your boat a great look.

This hard antifouling has a valid permit for use in Dutch waters (approval number 14533 N, check

Benefits of International Interspeed Extra

  • Easy to process (1-component).
  • Suitable for polishing to obtain a smooth finish.
  • Suitable for all surfaces.
  • Can be applied up to 6 months before launching.

How to apply Interspeed Extra

When applying this antifouling over an unknown antifouling, we recommend first using International Primocon to neutralise the layer. If the old layer is in a bad condition, we advise to remove it with a vacuum scraper. International Primocon is also suitable as a good primer before applying Interspeed Extra antifouling.

This antifouling consists of 1 component and can therefore easily be applied without having to mix it. Check the technical documentation for any pre-treatment of the substrate. Apply the Interspeed antifouling simply with a (furry) roller or brush. One coat per season is sufficient and we advise to apply an extra coat in places with a lot of turbulence, such as the bow, water-wind line, keel and rudder blade.

Tip: with the Antifouling auxiliary materials package, you immediately have all the materials you need!


Packaging: 0.75 and 2.5 litres
Colour: navy, red, white, black
Consumption: approx. 10 m2/ltr per layer
Application: brush or roller
Shelf life: 2 years
VOS: 445 g/ltr
Tack-free: after 30 minutes (23°C)
Load-bearing: after 8 hours (23°C)
Min. processing temperature: 5℃
Repaintable after: approx. 10-15 hours
Admission number: 14533 N

For more information on properties and processing, please check the technical documentation.

Everything for your boat!

Primers, antifouling, boatpaints, gelcoat, topcoat and all other articles to maintain your boat can be found at! All our products are delivered from stock in no time. Ordered before 17:30 o'clock? Then your order will be shipped the same day! 

Do you have questions about osmosis treatment, repairs or antifouling? Then take a look in our information centre. Would you like to contact our specialists directly? We are ready to answer your questions via e-mail, telephone, WhatsApp or live chat!

We have a number of recommendations for working safely with polymers. At Polyestershoppen you will not only find the polymers themselves, but you can also purchase all the protective equipment you need from us. If you have any doubts or questions, please contact our customer service. We can give you advice on how to work safely with polymers.

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Volume related prices

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2 Pieces € 47,49 € 5,00
5 Pieces € 46,24 € 18,75