Garrett’s Adventurevideo
Fixing 87 Osmosis Blisters on my Sailboat
6. august 2026 · 20 min · Gold Coast
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Garrett repaired 86 osmosis blisters on his 40-foot Hans Christian monohull while hauled out at a boatyard on the Gold Coast, Queensland, Australia.0:41 After purchasing the vessel at a discount due to the condition, he opted against a full hull strip-back because the yard lacked a hot-vac machine to properly dry the laminate.4:30 Instead, he and a team of four used angle grinders to open all significant blisters, confirming that none had caused deep structural delamination in the one-inch-thick hull.2:27 The team cleaned the cavities with water and MEK, filled them with epoxy and fiberglass, and faired the surface with micro-bubbles.11:14 After applying a barrier coat and three layers of bottom paint, the boat returned to the water.18:38 The three-week project cost approximately $4,000.18:54 While minor cosmetic blisters remain, the hull is structurally sound and seaworthy.20:17
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