Osmotic blisters, gelcoat chips, topsides paint, and structural damage. Four guides for sailors who want to understand what they're dealing with before they reach for the grinder.
Why blisters form below the waterline, how to diagnose micro-blisters vs. interlaminar damage, the professional drying standard, and how to apply a barrier coating system that actually holds.
What gelcoat actually is, the three levels of damage and how to treat each one, color matching on a faded hull, the oxygen inhibition problem, and when crazing means something structural.
When painting makes more sense than gelcoat repair, two-part vs one-part polyurethane, the roll-and-tip method, surface prep as the deciding factor, and what never to do with Awlgrip.
How to tell cosmetic from structural damage, balsa vs. foam core, the tap test, moisture meters, the epoxy mandate for structural work, and why keel movement is always an emergency.