MJ Sailingvideo

CATAMARAN BUILD: It’s Really Happening – Interior Paint Begins After 3 YEARS (MJ Sailing - Ep 355)

April 19, 2025 · 21 min · 37K views

What this video covers

The interior of a catamaran undergoes a multi-stage painting process using Alexseal Premium Top Coat 501 in cloud white.6:45 To prepare surfaces, the crew wipes down areas with a mixture of denatured alcohol and blue dye, then uses 320-grit sandpaper to remove the dye, which serves as a visual indicator for leveling low spots.1:06 The team applies the two-component polyurethane coating in sections, using fiberglass cloth over ventilation fans to trap airborne particles and minimize overspray.8:30 After struggling with a narrow-fan touch-up gun, the painter switches to a 3M professional spray gun with a nine-inch fan, finding the wider pattern more forgiving and efficient for achieving a uniform high-gloss finish.16:06 The project involves meticulous cleaning, vacuuming, and taping between coats to prevent dust contamination.3:35 The crew also utilizes an EcoFlow Glacier 35-liter portable cooler to maintain cold beverages during the hot, labor-intensive prep work.9:38 The interior finish is applied in stages across the V-berth, guest head, aft berth, and owner’s hull.4:51

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