STAR BRITE Epoxy Aluminum Putty Stick – Waterproof Aluminum Repair, Fast-Setting Underwater Emergency Fix

STAR BRITE Epoxy/Aluminum Putty Stick is a waterproof, kneadable epoxy made to bond and restore aluminum quickly, even for underwater emergency repairs.

This epoxy putty is formulated specifically for aluminum repairs where speed, durability and weather resistance matter. It combines a fast-setting resin with aluminum fillers so you can shape, press, or pack the material into gaps, holes or cracks and have a work‑ready repair in under an hour. The stick form is portable and simple to use aboard boats, in garages, or on RVs — no specialized equipment required.

How fast will it hold and when can I handle the repair?

The putty begins to set within minutes and becomes hard enough for handling quickly, making it practical for urgent fixes. Full development of mechanical strength occurs within roughly an hour, so you can sand, drill, or paint shortly after that.

• Initial set: works and bonds in 5–10 minutes
• Steel-hard stage: approximately 30 minutes
• Usable full cure: about 60 minutes for finishing
• No curing ovens or special tools required

Can this putty be applied underwater or in damp conditions?

Yes — the formula tolerates wet surfaces and is intended for emergency underwater applications, such as small through‑hull leaks or damaged outdrive areas. For best adhesion, remove heavy fouling and press the putty firmly into place so it fully contacts the substrate.

• Designed for wet or submerged aluminum repairs
• Press firmly to displace water and contact metal
• Works on oxidized and weathered aluminum with additives that improve bonding
• Ideal for temporary to long-term emergency fixes

What surfaces and components is it suited for?

This product targets aluminum substrates but is also useful for mixed-material repairs where aluminum is present, such as boat hulls, outdrives, RV panels and fuel tanks. It resists elevated temperatures, so it can be used on hot components where compatible.

• Aluminum hulls, pontoons, and structural components
• RV body panels and aluminum trim repairs
• Exhaust components and manifolds exposed to heat
• Fuel tanks, fittings and underwater hardware when applied correctly

How do I finish the repair once cured?

After the putty reaches full cure you can sand, drill and paint it to match surrounding surfaces and restore function or appearance. Proper finishing helps the repair blend in and provides additional corrosion protection when painted.

• Sands with standard grit sequences after 60 minutes of cure time
• Can be drilled and tapped for fasteners once hardened
• Accepts most marine and automotive paints and primers
• Surface prep before painting improves longevity

Who is this for: STAR BRITE Epoxy/Aluminum Putty Stick is designed for boat owners, anglers, RV owners, mechanics and DIYers who need a compact, fast, and reliable solution for aluminum repairs. It suits emergency patching on the water, routine maintenance in the workshop, or field repairs where portability and quick cure times are essential. Choose this putty when you want an aluminum-specific, easy-to-apply compound that can be shaped and finished without complex tools.