This is a cut-and-paste of a PM sent to John Michne which he answered with the suggestion that I post it here to generate more discussion. I also received input from Charger who I PM'd as well...he sounds very satisfied with his results.
I designed and built a 14 foot guide boat stripped with white cedar screwed to ribs on 6 inch centers. The outside was sheathed in 4 oz glass and epoxy. Painted black and living on the roof of a car over several seasons the epoxy has continued to post cure and the glass has printed through - I was striving for lightness so I added only enough epoxy to fill the weave plus a little for sanding before painting. Not only is the glass printing through but the texture of each of the underlying planks as well as the fasteners are visible through the paint. I'm not allowed to strip the paint and add more epoxy because the owner values the light weight and her ability to car-top and carry the boat independently. The slight texture on the outside does not bother her at all.
As much as I would like to plank a boat traditionally, I know it wouldn't withstand extended unprotected storage on a vehicle without checking/splitting etc. However, I would love to avoid the use of glass/epoxy. I know another Forum member (Charger) strip built his guideboat in pine with titebond III and no sheathing. Structurally, the glass isn't essential as it is in a pure wood strip boat.
In your collective opinion, would a lay up of bead and cove strips with resourcinol on six inch rib spacing be stable enough to live on the truck rack through the season without cracking or splitting? I would probably roller on a sealer coat of epoxy prior to paint both as a primer and to provide a base over which to add glass/epoxy should that become necessary later on it it's life.
I totally get the dark paint sun thing so I'd have to swallow hard and paint it a light color...maybe white with black rails and pink interior?
I designed and built a 14 foot guide boat stripped with white cedar screwed to ribs on 6 inch centers. The outside was sheathed in 4 oz glass and epoxy. Painted black and living on the roof of a car over several seasons the epoxy has continued to post cure and the glass has printed through - I was striving for lightness so I added only enough epoxy to fill the weave plus a little for sanding before painting. Not only is the glass printing through but the texture of each of the underlying planks as well as the fasteners are visible through the paint. I'm not allowed to strip the paint and add more epoxy because the owner values the light weight and her ability to car-top and carry the boat independently. The slight texture on the outside does not bother her at all.
As much as I would like to plank a boat traditionally, I know it wouldn't withstand extended unprotected storage on a vehicle without checking/splitting etc. However, I would love to avoid the use of glass/epoxy. I know another Forum member (Charger) strip built his guideboat in pine with titebond III and no sheathing. Structurally, the glass isn't essential as it is in a pure wood strip boat.
In your collective opinion, would a lay up of bead and cove strips with resourcinol on six inch rib spacing be stable enough to live on the truck rack through the season without cracking or splitting? I would probably roller on a sealer coat of epoxy prior to paint both as a primer and to provide a base over which to add glass/epoxy should that become necessary later on it it's life.
I totally get the dark paint sun thing so I'd have to swallow hard and paint it a light color...maybe white with black rails and pink interior?
)
