Osculati Marine White Gelcoat Filler - 200g

Osculati 65.520.06 is a 200g, two-component white gelcoat putty for repairing small chips, scratches, dents and worn areas on existing marine gelcoat. It is applied with a putty knife, cures to a glossy bright white finish and can be sanded after approximately 60 minutes at 25°C.

What is Osculati 65.520.06 used for?
This 4-in-1 marine gelcoat filler is designed for small DIY repairs to damaged gelcoat surfaces. It fills and levels imperfections while producing a glossy, varnish-like white finish that can be polished or overpainted after curing.

How is it applied?
The gelcoat putty is mixed with 1–3% benzoyl peroxide hardener and applied with a clean putty knife. The repair surface must be completely dry, clean and prepared with P80 or P150 abrasive paper before application.

How quickly does it cure?
At 25°C, the mixed filler has a gel time of approximately 4–5 minutes, becomes tack-free after approximately 20 minutes and fully dries in less than one hour. It can normally be sanded after 60 minutes. Higher temperatures shorten the curing time, while lower temperatures extend it.

Key Features

• Brand: Osculati
• Part number: 65.520.06
• 200g two-component gelcoat filler
• Bright white, high-gloss finish
• Repairs chips, scratches, dents and worn gelcoat
• Knife-applied like conventional filler
• 1–3% benzoyl peroxide hardener ratio
• Sandable after approximately 60 minutes at 25°C
• Can be polished or overpainted after curing
• Gloss rating greater than 90 at a 60° measurement angle

Application Instructions

1. Ensure the existing gelcoat is completely dry and clean.
2. Prepare the damaged area using P80 or P150 abrasive paper.
3. Remove the required quantity using clean tools.
4. Add 1–3g of hardener per 100g of gelcoat putty.
5. Mix both components thoroughly.
6. Apply and level the filler using a putty knife.
7. Allow approximately 60 minutes before sanding at 25°C.
8. After full curing, sand progressively with P80, P240, P400 and P1000 abrasive paper.
9. Polish the completed repair where required.

Do not return unused mixed material to the tin. Keep the container tightly closed after use. Apply in a ventilated area while wearing appropriate personal protective equipment and consult the safety data sheet before use.