smooth coop wall material?

[perkolator]

I always thought the solution to this is to sheet both sides and paint it

 

[mowin]

Would leave the framing exposed to the elements.

Yes, but OP said there was ample overhang to protect it.
I would still paint or seal those studs.

 

[mowin]

I always thought the solution to this is to sheet both sides and paint it

I could be wrong, but I read it as leave the framing exposed. Haven't heard from the OP to clarify.

 

[mowin]

I always thought the solution to this is to sheet both sides and paint it

The issue with sheathing both sides is you just created a rodent hotel. They will find their way in.

 

[David61]

I used 2x4s and rapped with 1/2 HW cloth. The put tin on the outside. It vents well and blocks the wind. I can spray permethrin with no nooks and cranies of a framed wall structure with the 2 x 4's exposed.

 

[rossi09]

I used smooth white hardboard panels from Lowe's for the inside walls of my coop. I think it was about $20 for a 4x8 sheet. It's worked great so far! Easy to clean since it's a nice, smooth surface and it's water resistant.

 

[Smokerbill]

I used plywood, with framing inside. I primed all inside surfaces (studs, walls and floor) with Kilz3 primer, then applied a topcoat of white semi-gloss house paint, same stuff I used to paint the trim of my house. Seems like a pretty slick, cleanable surface to me. And I think the white color will make it easier to spot any insect infestations if I'm unlucky enough to suffer that problem.

In the future, when I do a deep cleaning I plan to apply a new coat of primer and paint to the inside to keep it in good shape.