found this blue styro board. (insulation choice)

[chucklesR]

Tongue and groove would allow for sliding/expansion - then have the edges (all four) not quite come to the edge. Install it tight and let it expand to the edges, not between the boards. There are formula's for that out there (google it) and it's dependent on length, thickness and type of wood. Molding placed over (not attached to) the edge of the ceiling just like a wooden floor in a house would then cap it off.
The width of the plank depends on the stock on hand and ease with which you can get it around compound corners. Narrower is easier, probably look better, but would be more work.
I'd skip the fake beams - open and smooth is better to create the look of a bigger surface/more open space.
For fastening, my idea would be to try and make sections that are screwed in (held in place by the molding only) with a toggle arrangement. That way you can get to the underneaths quickly if holed or leaking.
BTW that closed cell foam would have a built in floatation factor too.

[deniseO30]

free, thanks for link I know of that place! Anyway, I have a whole woodshop in my basement. Planers, lathe, band and table saws, drill press, scroll saw..routers, etc. About all I play with is the Lathe. Made a nice cherry wood replica of a wine glass last night but it broke out. grrr...

I have enough white cedar to do the "ceiling" of the whole boat. But, not this yr! Maybe soft headliner for the "overhead" dog? T&G beadboard sounds right!

I'll get the whole boat interior nice eventually, and the keel will fall off or it gets hit by a Tug boat some dark night.

gotta love Sailnet!

[sailingdog]

Nah, what will happen is you'll decide you need a bigger boat and have to sell her to afford the new one. It is called three-footitis.

Originally Posted by deniseO30

free, thanks for link I know of that place! Anyway, I have a whole woodshop in my basement. Planers, lathe, band and table saws, drill press, scroll saw..routers, etc. About all I play with is the Lathe. Made a nice cherry wood replica of a wine glass last night but it broke out. grrr...

I have enough white cedar to do the "ceiling" of the whole boat. But, not this yr! Maybe soft headliner for the "overhead" dog? T&G beadboard sounds right!

I'll get the whole boat interior nice eventually, and the keel will fall off or it gets hit by a Tug boat some dark night.

gotta love Sailnet!