International Watertite Underwater Epoxy Filler

Repair boat damage with confidence using International Watertite. This rapid-curing two-part formulation bonds seamlessly to GRP, metals, and timber, delivering reliable protection whether your repairs sit above or below the waterline. 

Apply up to 20mm depth in a single coat and enjoy superior water resistance that keeps moisture out for years.

The smooth, matt blue finish blends naturally with most surfaces, while exceptional adhesion ensures lasting durability against collisions, impact damage, and harsh marine conditions. Perfect for DIY boat owners seeking professional-grade results without the wait.

• Fill up to 20mm with no sagging
• Use above and below the waterline
  
• Simple 1:1 mix ratio for reliable mixing
• Highly resistant to water, suitable for permanent repairs below the waterline.
• Quick drying to reduce downtime and get your boat back in the water sooner.
• Bonds to a wide range of marine substrates including GRP, wood, steel, aluminium and lead.
• Fills and fairing stay true to shape for accurate repairs.
• Sands easily to a fine, paint-ready surface.
• Coverage: 0.2m2 at 5000 Microns WFT Per Litre
  

Product Data Sheet

Safety Information Sheet (Part A)

Safety Information Sheet (Part B)

• Fill up to 20mm with no sagging
• Use above and below the waterline
  
• Simple 1:1 mix ratio for reliable mixing
• Highly resistant to water, suitable for permanent repairs below the waterline.
• Quick drying to reduce downtime and get your boat back in the water sooner.
• Bonds to a wide range of marine substrates including GRP, wood, steel, aluminium and lead.
• Fills and fairing stay true to shape for accurate repairs.
• Sands easily to a fine, paint-ready surface.
• Coverage: 0.2m2 at 5000 Microns WFT Per Litre
  

Product Data Sheet

Safety Information Sheet (Part A)

Safety Information Sheet (Part B)