Hempel Underwater Primer

Hempel Underwater Primer is a high-quality one-component primer. The fast-drying primer has excellent water resistance. This makes Hempel Underwater Primer the ideal primer to use before applying a new Hempel antifouling. This primer is also suitable as a sealer on old antifouling or as an anchoring layer on a surface that has been pretreated with epoxy primer.

Hempel Underwater Primer can be applied directly to the hull or a primed surface. It has excellent adhesion to polyester, wood and steel substrates.

Benefits of Hempel Underwater Primer

• Fast drying primer.
• One-component primer.
• Excellent water resistance.
• Suitable as primer for antifouling.

Directions for use

Hempel Underwater Primer is easy to apply by brush, roller, spray or paint pad. The minimum processing temperature is 5°C. Avoid working in direct sunlight.

• Always ensure that the surface is lightly sanded, clean, grease-free and dry before applying Hempel Underwater Primer.
• Stir the contents well before application.
• Apply Hempel Underwater Primer.
  
  • Previously coated surface - apply 1 coat of primer as a sealing or anchoring coat.
  • Previously pretreated surface - when the previously applied epoxy primer is still tacky, apply 1 coat of the product as an anchoring coat.
  • Wooden surface - apply 1 coat of primer first, diluted with the specified thinner (max. 20%). Then apply 2 coats of Underwater Primer. If necessary, add thinner to aid application (max. 5%). 
• After approximately 3 hours (at 20°C) the primer is hand-dry and ready for recoating.
• You can now apply a Hempel antifouling of your choice.

Specifications

Contents: 0.75 L and 2.5 L
Colour: aluminium/grey
Gloss: matt
Coverage: approx. 7.8 m²/L
Touch dry: 3 hours (at 20°C)
Overcoating: 3 hours (at 20°C)
Application method: brush, roller, spray or paint pad
Thinner: Hempel Thinner 811 (No. 1)