Gelcoat & Topcoat

Gelcoat - is designed to go into a mould e.g. for boat building. It remains tacky after it cures so fibreglass is generally applied onto the gelcoat to stop air exposure, allow it cure and form a hard surface.

Topcoat (also known as Flowcoat) - is gelcoat that has 2% wax added to enable it to cure hard. It is used when it's not possible to use a mould e.g. for roofing applications and external boat repairs. It provides a tough outer coating when applied onto fibreglass.