Sailing Catalpa · video

What this video covers

Repairing gelcoat damage on a 30-year-old boat requires removing failed, non-adhering patches, grinding out deep wounds, and filling them with a fiberglass and resin mix before applying a final layer of fairing compound.4:36 For above-waterline repairs, polyester fairing compound provides a suitable base, while epoxy is necessary for structural integrity below the waterline.2:27 To match aged, off-white gelcoat, use a neutral wax-based gelcoat and add pigments in extremely small, diluted increments to avoid over-saturation.8:26 Adding colloidal silica thickens the mixture for easier application, though it may slightly reduce the final gloss.9:04 Because gelcoat color varies across a hull due to uneven sun exposure, test small dabs of the tinted mixture against the specific area being repaired before committing to a full batch.10:01 The process involves sanding the cured fairing compound, applying the tinted gelcoat, and sanding again to achieve a flush finish.19:28

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