BoatworksToday · video

What this video covers

To permanently close redundant through-hulls on a 1970 Paceship Yachts Westwind 24, Andy performs a structural fibreglass repair using a 12-to-1 taper ratio.3:37 Because the hull is 1/4-inch thick, he grinds a 3-inch taper around each hole to ensure a strong bond.4:04 He uses 1708 biaxial fibreglass cloth and 5-to-1 epoxy resin, applying three layers to the exterior and three to the interior to restore the original hull thickness.5:44 He selects 5-to-1 epoxy over 2-to-1 for its higher viscosity, which prevents the resin from running on the vertical hull surface.8:41 After the cure, he removes the amine blush—a waxy byproduct of the curing process—by wiping the surface with water before sanding and fairing.12:49 He chooses to remove the old fittings because they were improperly installed using household copper pipe without mushroom-head caps, creating a significant leak risk.16:09 Closing these holes allows for a clean slate when installing new plumbing during the interior refit.

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