Unfortunately, in order to fix the crack one must have at least some idea of what caused it. I would repair a crack caused by me dropping something a lot differently than one that was a stress crack.
Anyway, a small cosmetic crack can be repaired with gelcoat
but you'll need to match the color. I can give you long drawn out instructions on this but if it is just one small repair you are probably better off finding a repairman. It will be cheaper, if only in terms of material to hire it done. After all, do you need a quart of gelcoat
, and the coloring agents?
A flat out stress crack will need to be ground down to the glass and any cracked glass also repaired otherwise the crack will come back. Once the glass is repaired, usually by a filling agent such as long fiber glass in epoxy
, the gelcoat is then repaired as in the small ding.
For now, without knowing more, I'll opt for having someone else fix it. A simple fix does not take long.