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Old 05-29-2019, 03:47 PM   #2
syjos
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City: Gig Harbor
Country: USA
Vessel Name: Sandpiper
Vessel Model: Bluewater 40 Pilothouse Trawler
Join Date: Nov 2012
Posts: 734
Pic 1 Gluing down scarfed 1/2" mahogany marine plywood panels. Temporary frame at midpoint of the pilothouse to keep roof beams at the proper orientation. The long plywood was hinged at the left side in order to locate them at the correct position so the adhesive did not smear while installing without assistance. The plywood was held down with temporary screws with fender washers into the beams. Screws removed after adhesive cured. Plastic on the boathouse roof to prevent condensation from dripping on bare plywood. Using System Three Gel Magic for the first time. Loaded the mixed Gel Magic into a caulking tube and applied it to the top of the beams and spread it with a notched squeegee. There was absolutely no dripping of the epoxy adhesive

Pic 2 First layer of scarfed plywood glued down. Scarfing was necessary to maintain curvature of roof. The underside of the first layer of plywood was coated with two coats of epoxy prior to installation. The second temporary frame at the front of the roof was also necessary to maintain curvature until the second layer of plywood was glued down. The planks make working on the roof easy.
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