Sampaone, welcome to the forum! Bstreep and Swagman are correct - gelcoat cracks are the result of flexing in the GRP hull/deck and will recur if the cause is not corrected. If it is the result of inadequate construction, the hull/deck will require reinforcement in the areas in question - a very expensive proposition. If the cracks are the result of collision
damage, then so long as the laminate was not also damaged, it may be possible to grind out damaged areas, fair with epoxy
and paint or re-gelcoat (and from your description, I am assuming here that the boat was refinished with gelcoat rather than paint).
Crazing can be the result of exposure to the sun, overly thick gelcoat or excessive catalyst - and again, repairs
can be made by grinding (or sanding) out the affected areas and repairing with either epoxy
, or gelcoat.
Peeling gelcoat suggests improperly made repairs
- if epoxy was used to repair a damaged area, then a special technique must be utilized in applying gelcoat over top of the epoxy (and some manufacturers recommend that it not be done at all).
From your description of the extent of the damage, I would recommend repairing the affected areas wtih epoxy and then repainting the entire boat. Once again, you must keep in mind that cracks that were not
caused by collision
or dropping heavy items on deck
, will require reinforcement of the hull/deck itself or the cracks will reappear.