Interlux Paint Fillers

When it comes to marine repair and restoration, Interlux Paint has established itself as a trusted name in professional-grade fillers engineered specifically for the demanding marine environment. Their epoxy-based filler compounds represent decades of marine coating expertise, delivering reliable performance in both above and below waterline applications where standard automotive fillers simply cannot compete.

Watertite: The Flagship Marine Filler System

Interlux's Watertite Epoxy Filler is a 2-part, easy-to-use epoxy compound for filling holes and repairing scratches in gelcoat and fiberglass above and below the waterline. This versatile formulation works on fiberglass, properly primed metals, epoxy, and rigid wood constructions, making it an essential product for boat owners, yacht refinishers, and marine professionals. The formulation does not shrink and is extremely water resistant, making it suitable for osmosis damage repairs—a critical consideration for anyone dealing with blister damage on fiberglass hulls.

Fast-Cure Performance with Extended Workability

What sets Interlux fillers apart in the marine repair category is their balance of fast cure times and user-friendly working properties. It has the consistency of butter during application and cures to the touch in 15 minutes at 77°F. Can be applied up to 3/4" thick without sagging. This rapid cure time means repairs can progress quickly, while the superior spreadability makes the product equally effective as a heavy-duty filler or a fine glazing compound for finishing work.

Designed for the Marine Environment

Unlike general-purpose fillers, Interlux's marine-specific formulations address the unique challenges of watercraft maintenance. The products feature simple 1:1 mixing ratios for accurate measurement, excellent adhesion properties, and a long sanding window that gives professionals and DIY enthusiasts adequate time to achieve smooth, fair surfaces. The water resistance is exceptional, with the ability to perform reliably both above and below the waterline when properly primed and topcoated with compatible Interlux systems.

For marine restoration projects, osmosis blister repair, or routine gelcoat damage correction, Interlux Paint's filler products deliver the durability and workability that marine applications demand. Their proven track record in harsh saltwater environments makes them a go-to choice for boatyards and individual boat owners who refuse to compromise on repair quality.