REBUILDING OUR HULLS: Blister repair series - part 4 (Episode 350)
February 8, 2026 · 23 min · 195K views · Langkawi Island
Two workers press fiberglass patch onto boat hull
What this video covers
Repairing extensive hull blisters on a Lagoon 450 at Reebok Island Marina in Malaysia requires grinding out damaged fiberglass to reach dry material, often revealing deep voids and uncured resin.1:13 Moisture meters prove essential for identifying these hidden defects, which extend beyond surface-level blistering.1:15 The repair process involves removing saturated fiberglass, drying out damp balsa core with dehumidifiers in a sealed tent, and rebuilding the hull sections with multiple layers of new glass.6:52 Below the waterline, the crew uses epoxy resin and a barrier coat for superior strength and moisture resistance, while opting for polyester resin and gel coat above the waterline for a factory-style finish.5:01 The team also investigates moisture in the rudders by dropping them to inspect for internal water ingress between the foam core and fiberglass skin.18:51 By replacing defective sections with epoxy-reinforced laminates, the crew aims to eliminate future blistering and restore structural integrity to the hull.
Boats in this video
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