BoatworksToday · video

What this video covers

To correct a half-inch sag in a solid fiberglass cabin top, Andy uses a large belt sander to shave down the high spots and create a uniform profile.4:48 Because the deck lacks coring, he rejects the idea of pushing the deck up from the interior, noting that the resulting tension would likely cause cracking or debonding.3:50 After sanding the area down by approximately one-quarter inch, he prepares the surface by removing the existing non-skid texture and cleaning the laminate.7:30 He applies 1708 fiberglass cloth with polyester resin, choosing polyester over epoxy for its faster cure time under cold shop conditions.8:09 He catalyzes the resin at 2% to ensure a quick set before finishing the remaining work.8:57 The repair maintains the deck's original camber to ensure proper water drainage.7:03 Any remaining low spots are addressed with fairing compound.6:39

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