Sloped ceiling with boards visible
#1
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Sloped ceiling with boards visible
In the picture below, it appears to be the actual roof line with roof joists visible. However I don't understand why there are boards visible as I would think most summer homes would use plywood on the roof. This is from new construction. Is this panelling attached to roof under surface purely for the look or is this the actual roof.

#2
It is quite possible that those are actually insulated panels. I built a log home some time back and the exposed ceiling similar to this one was actually planks/foil/4" closed cell foam/foil/OSB for a really insulated but thick roof. The panels were installed on the rafters using 9" spiral spikes and the roofing applied over that.
#3
It would help to see more of that angle on the right side of the pic, but I would almost guarantee its applied to the bottom of the rafters and those are faux beams.
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I'm thinking that a lot of these are planks attached to existing ceiling for effect.
In a summer cottage what would be the best way to attach this between the actual roof joists to the plywood. I'd worry about nailing and causing leak, but also worry about a glued board falling.
In a summer cottage what would be the best way to attach this between the actual roof joists to the plywood. I'd worry about nailing and causing leak, but also worry about a glued board falling.

#5
Assuming you don't want or need any insulation, you would probably want to put a 2x2 cleat on each side of the joist to put some space between the plywood and any protruding nails. You could then put some 1 1/2" foam between, if desired. But you'd probably want to either use a tongue and groove plank so that you can blind nail it through the tongue.