MJ Sailingvideo
Looking Like a Mold & NOT a Kit - Spraying Gelcoat (MJ Sailing - Ep 302)
16 September 2023 · 18 min · 43K views · Kent Island
What this video covers
Matt and Jessica work to eliminate visible seams on their kit-built boat by grinding, glassing, and fairing the exterior hull joints.Watch To prevent future cracking, Matt uses a 30-millimeter belt sander to remove existing gelcoat around the flanges, then fills voids with a mixture of resin and 10-millimeter fiberglass strands.1:20 After applying fiberglass tape over the joints, he uses TotalBoat fairing compound to create a smooth, monolithic surface.9:18 The pair tests their gelcoat color match on the stern, where cockpit seats meet the deck and the transom joins the hull.11:35 They apply the gelcoat in five-mil layers using a wet thickness gauge to reach a 25-mil total build, adding wax to the final coat to ensure a full cure for wet sanding.13:32 Despite a sudden rainstorm during application, the finish cures overnight.14:50 Matt applies a green guide coat to assist with future sanding, which will be completed after the crew returns to Kent Island.17:02
More from MJ Sailing
From MJ Sailing — see the channel’s boat, crew, and every analysed video.
The Sailing Directory Newsletter
One email with the fleet's best finds — the moments, boats, and stories worth your watch time. Enter your own address to get your own copy.