Clean out with our Epoxy Solvent or xylene. Allow 2 days to pass. You can do this as long as you want, allowing a day dry time between applications, because what you are doing is building thin layers of epoxy in, on and around the glass matrix. Push it in, smooth it off, and paint with an epoxy or polyurethane barrier-coat paint. The repair will be virtually waterproof.
Mast steps are usually wood based, and they rot or deteriorate.
It's often easier to rebuild the existing deteriorated step than it is to pull it and replace. The wood trim on glass boats is now usually teak, which is good because it won't rot. If you have questions about what will work and what won't work then contact us via e-mail. We almost always respond with 24 hours. All rights reserved.