Well, I may have been a bit vague as to what I am trying to find out.

I am trying to understand what may or will happen over time to an encolsure system (be it site built 2X panels consisting of kiln dried lumber, or SIPs) when the green timber the enclosure is attached to shrinks down to it's dry timber size.

The main concern is where the wall panels meet the roof panels at the eave. In a house where common rafters rest upon a continuous top plate, might there be a problem due to the plate and the rafters shrinking in cross section? Might the panels collide (for lack of a better term) at the eave and cause problems? Is there a method people are using or panel companies are recommending to avoid/deal with these potential concerns?

I know that enclosure panels are attached to green frames all the time, but my clients contractor is not too familier with timber framing in general let alone enclosure systems. He is wondering why not just get kiln dried timbers.

Thanks again,

Kevan