Many boating enthusiasts own boats made of fiberglass. This material is durable, affordable and lightweight, but can become damaged due to collisions or regular wear and tear over time. No one feels safe boating once a crack appears in their boat. Fortunately, repairing a crack in a fiberglass boat is relatively simple, though it does require a certain bit of skill and finesse. With patience, any boat owner can repair their boat and restore its like-new shine.
Protect your skin and eyes by wearing rubber gloves and safety goggles. This type of protection should always be worn when working with chemicals.
Allow 4 to 6 hours for the patched area to dry. Wet the sandpaper and carefully sand down the repaired area until it is level with the rest of the surface. Sand slowly, as you don't want to over sand the patch.