Often chosen
International Interprotect
At a glance
- 2-component epoxy primer
- Anti-corrosion protection
- Good scratch resistance
Fast delivery throughout Europe
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If you use your boat or yacht regularly, proper maintenance is essential. International primers are ideally suited for this purpose. In addition to a 1-component primer, International also offers a 2-component primer: International Interprotect.
International Interprotect is a fast-curing, 2-component epoxy primer with excellent corrosion protection. Thanks to its high abrasion resistance, it can be used on steel, aluminium, zinc/galvanised steel, lead and wood. Interprotect is suitable for use both above and below the waterline.
Tip: if you have a polyester boat, we recommend using the vapour-resistant International Gelshield 200 to protect your hull against osmosis.
Benefits of International Interprotect
- High‑performance epoxy primer.
- Excellent anti-corrosion protection.
- Easy to sand.
- Fast-drying.
- Good scratch resistance.
Suitable substrates
You can easily apply the Interprotect epoxy primer to:
- Aluminium / galvanised steel (zinc-coated)
- Lead
- Steel
- Wood
Directions for use
Follow the steps below to apply International Interprotect:
- Prepare the substrate according to the instructions in the technical documentation (section: Application and Use).
- If filling is required, use a suitable filler after the first coat of Interprotect has been applied.
- Remove all dust before starting the painting process.
- Open both containers and stir each component separately.
- Add the hardener to the base and mix thoroughly.
- Allow the mixture to stand for 10 minutes to allow air bubbles to escape.
- Apply the number of coats specified in the technical documentation (1–5 coats depending on substrate and use) using a nylon roller or brush. Coverage is approximately 8.1 m²/L.
Tip: with the 2k primer materials package you'll have everything you need to apply the epoxy primer!
Specifications
| Packaging | Surface |
| 0.75 L | approx. 6.1 m2 |
| 2.5 L | approx. 20 m2 |
Colours: off-white or grey
Finish: matt
VOC: 464 g/L
Mixing ratio: 3:1 (by volume)
Coverage: 8.1 m2/L
Application temperature: 5-35°C
Application method: nylon roller or brush
Thinner: Thinner No.7
Pot life: 5 hours (at 15°C)
Tack-free after: 2 hours (at 15°C)
Recommended number of coats: 1-5 coats
Recoatable (Interprotect) after: 5 hours (at 15°C)
Recoatable (antifouling) after: 10-20 hours (at 15°C)
Water immersion after: 18 hours (at 15°C)
Shelf life: 2 years
For more detailed information on properties and application, please consult the International Interprotect technical documentation.
Everything for your boat!
Primers, antifouling, boat paints, gelcoat, topcoat and all other products for boat maintenance are available at Polyestershoppen.com! All our products are available for immediate delivery from stock. If you place your order before 5:00 pm CET (Central European Time), your order will be dispatched the same day.
Do you have a question about osmosis treatment, repairs or antifouling? Take a look at our information centre. Prefer to speak to one of our specialists? We are ready to assist you via email, telephone, WhatsApp or live chat!
Product properties
The key technical properties clearly listed in one place.
- Article number
- BOO000494
-
The materials, substrates or tasks a product is intended for. A general claim such as 'suitable for plastics' does not mean it works with every type of plastic; the specific substrate and its preparation still matter.
- Polyester boten, Stalen-boten, Aluminium boten, Houten boten
-
The technical product category, such as primer, resin, hardener or cleaner. It explains the product's purpose and helps you find other products with a similar function.
- 2K Primer
-
The recommended application temperature range indicates the conditions under which the product can generally be applied and cured properly. Three temperatures matter:
- Air: the temperature in the workshop or outdoors.
- Substrate: the temperature of the surface being treated.
- Product: the temperature of the resin, adhesive or coating itself.
A cold substrate can cause condensation and affect adhesion. At higher temperatures, two-component products may react faster, reducing their working time. Check the dew point and follow the product instructions.
- 5-35 °C
-
The recommended number of coats needed to achieve the intended coverage, thickness or protection. Highly absorbent substrates or different application methods may require additional coats. Allow for the specified time between coats.
- 1-5 coats
-
The period for which an unopened product remains usable under the specified storage conditions. Check whether the period starts from the manufacturing date or another date. Shelf life may be shorter after opening, especially for products sensitive to air or moisture.
- 24 months
-
The time until the surface no longer feels tacky to a light touch. The material underneath may still be soft, so tack-free does not mean fully cured or ready for heavy loading.
- 2 hours (15 °C)
-
Mixing ratio indicates how much of each component is needed, for example resin (A) and hardener (B). A ratio of 100:50 by weight means 100 grams of A to 50 grams of B; by volume you might use millilitres. Weight and volume ratios are not necessarily the same because the components may have different densities. Accurate measuring is important for proper curing.
- 3:1 (by volume)
-
The minimum waiting time between applying an underwater coating or antifouling paint and launching the boat. Some products also specify a maximum time before launch. These times may depend on temperature and applied film thickness.
- 18 hours (15 °C)
-
Consumption or coverage describes how much product is needed for a given surface area. Consumption may be stated in g/m² or kg/m², while coverage is often given in m²/L or m²/kg. A consumption of 0.2 kg/m² means a theoretical 200 grams per square metre. Actual use depends on film thickness, substrate absorbency, application method and waste.
- 8.1 m²/L
-
A specific thinner that can be used, where permitted, to adjust a product's application properties or viscosity. The correct thinner and maximum quantity depend on the product. Incorrect thinning can affect coverage, drying and curing.
- Thinner No.7
-
The application or processing methods specified by the manufacturer, such as brushing, rolling, spraying, casting or hand laminating. The chosen method can affect consumption, layer thickness and finish.
- Brush, Nylon paint roller
-
Working time is the period during which a product remains workable after mixing or activation, usually given in minutes at a specified temperature, often 20 °C. With reactive resins, the chemical reaction also continues in the mixing container, and larger quantities or higher temperatures can shorten this time. Working time is different from gel time and full curing time.
- Approximately 300 minutes (at 15 °C)
-
VOC content (volatile organic compounds) indicates the amount of these substances in a product, usually expressed in g/L (grams per litre). They may evaporate during application and drying. The value describes the composition, but actual exposure also depends on how much is used, ventilation and the application method.
- 464 g/L
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