Gelcoat is the protective outer layer used on the hull of boats. It not only protects the boat hull from UV rays and water, but it also enhances its appearance. No matter how well-maintained your boat is, the gelcoat will wear out eventually and require recoating. Here’s a guide on.
Step 1: Preparation
The first step is to prepare the surface for the gelcoat. Clean the boat hull thoroughly by removing all dirt, grime, and any chipped or cracked areas. Use a power sander with 220 grit sandpaper to sand the entire hull to create a rough surface to enable better adhesion when applying the gelcoat. After sanding, clean the hull with a damp cloth to remove any sanding debris.
Step 2: Choosing the Right Gelcoat
Different boats require different gelcoat types. Ensure that the gelcoat you choose is compatible with your boat’s material, be it fiberglass or aluminum. You can seek an expert in gelcoat types to help you choose the best gelcoat for your boat.
Step 3: Mixing the Gelcoat
After choosing the right gelcoat, the next step is to mix it correctly. In a mixing cup or container, mix the gelcoat with the hardener, following the manufacturer’s instructions. Ensure that you mix the gelcoat thoroughly and in the right proportion to prevent any uncured spots on the hull.
Step 4: Applying the Gelcoat
With a brush or a foam roller, apply the gelcoat gently on the boat hull starting from the bow and moving downwards to the stern. Apply the gelcoat methodically, ensuring that you cover all the surfaces evenly. Ensure that you have a steady hand as lumps, bumps or skimpy sections will show up after the gelcoat dries. Spread thin, even layers of gelcoat, mostly with a foam roller to avoid the air bubbles accumulating or make it to the final product. Allow the first layer to dry before applying more layers, normally every two hours.
Step 5: Sanding and Buffing
After the final layer of gelcoat dries, the next step is to sand the hull with a power sander, polyurethane sandpaper, and water. This removes any imperfections such as bubbles or scratches. After sanding, buff the hull with a polishing machine and buffing compound to achieve a smooth and shiny finish.
Applying gelcoat on a boat hull can be a lengthy process, but the effort pays off in the end with a new glossy shine. Ensure that you follow the manufacturer’s instructions carefully and take your time to achieve the best results.