Grunt Supawax 500ml is a premium marine polish and protective wax designed to restore and protect gelcoat, fibreglass, enamel, and painted surfaces. It forms a durable protective layer that shields your boat from UV rays, saltwater, dirt, and environmental damage, while delivering a deep, high-gloss finish.

This easy-to-use formula is applied by simply wiping on with a damp cloth and polishing off, making it ideal for both DIY users and professional marine maintenance. It can even be applied in direct sunlight, saving time during quick clean-ups or maintenance sessions.

Supawax provides long-lasting protection—helping maintain shine and prevent oxidation, chalking, and staining for up to 6 months in typical marine conditions.

Key Features

• High-gloss protective wax finish for gelcoat and paint
• Shields surfaces from UV, saltwater, dirt, and grime
• Long-lasting protection (up to 6 months)
• Wipe-on, wipe-off application – no heavy buffing required
• Can be applied in direct sunlight
• Helps prevent chalking, oxidation, and waterline scum
• Suitable for boats, cars, caravans, and trailers

Specifications

• Volume: 500ml
• Product Type: Marine polish & protective wax
• Application: Hand application (cloth)
• Finish: High-gloss protective coating
• Surfaces: Gelcoat, fibreglass, enamel, painted finishes
• Use Case: Marine maintenance, detailing, surface protection

Why Choose Grunt Supawax? 

For New Zealand boat owners, UV exposure and saltwater are the biggest causes of surface degradation. Supawax provides a protective barrier that slows oxidation and keeps surfaces looking newer for longer.

It’s best used as the final stage in a restoration system:

1. Remove oxidation (e.g. Klenashine)
2. Apply Supawax to seal and protect

This makes it ideal for:

• Maintaining recently polished boats
• Protecting gelcoat after restoration
• Quick seasonal maintenance before summer

Recommended System 

For best results, pair Supawax with:

• Grunt Klenashine Oxidation Remover → Removes oxidation and restores surface
• Supawax → Locks in shine and adds protection

This 2-step system converts extremely well and increases basket size.