When is interior gel coat applied to a hull?

Interior gel coat is applied to a hull once cutting, grinding, and sanding are complete because these processes prepare the surface for the gel coat application. This ensures a smooth, even base for the gel coat to adhere to, which is crucial for providing the necessary finish and protection to the composite material. If the gel coat were applied before these preparation steps, it could be damaged or compromised during cutting and grinding. Applying it after these steps allows for a clean, well-prepared surface, enhancing both adhesion and the overall quality of the finish. Proper timing in the manufacturing process is important to ensure that each layer of the hull is effectively constructed and protected.