International Thinner No. 9, 1Lt
€36.58
The International Thinner No. 9 – 1L is a specialist polyurethane thinner developed for selected two-component International paints and varnishes.
It is suitable for thinning compatible coatings and for cleaning application equipment, helping achieve the correct viscosity and smoother application.
In stock
International Thinner No. 9 is formulated for use with selected two-component polyurethane coating systems, including Perfection, Perfection Plus and Perfection Undercoat.
When thinning is required, it helps adjust the viscosity of the coating for easier application and improved flow. The exact amount used should always follow the instructions of the specific paint or varnish being applied.
Thinner No. 9 can also be used for cleaning brushes, rollers and other application equipment after working with compatible International polyurethane products.
The 1-litre container is a practical choice for yacht painting, varnishing, maintenance and refinishing projects.
Key Features
- Specialist thinner for two-component polyurethane coatings
- Suitable for International Perfection
- Suitable for International Perfection Plus
- Suitable for International Perfection Undercoat
- Helps adjust paint and varnish viscosity
- Supports smoother and more controlled application
- Suitable for cleaning compatible application equipment
- Designed for marine coating systems
- Size: 1L
Technical Details
- Product: International Thinner No. 9
- Type: Polyurethane thinner / solvent
- Size: 1L
- Compatible Products: Perfection, Perfection Plus, Perfection Undercoat
- Application: Thinning and equipment cleaning
- Suitable For: Compatible two-component polyurethane paints and varnishes
- Storage: Keep securely closed and away from extreme temperatures and direct sunlight
Important: The required thinning ratio varies depending on the International product and application method. Always follow the technical instructions of the specific paint or varnish before adding Thinner No. 9. Use in a well-ventilated area and follow the safety instructions on the product label.
Why Choose International Thinner No. 9?
Using the correct manufacturer-specified thinner helps preserve the application characteristics of two-component International polyurethane coatings. Thinner No. 9 is specifically formulated to work with compatible Perfection systems, making it the appropriate choice for both controlled thinning and equipment cleaning.





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