They are errecting a timber frame building near us and the roof appears to be ply (or similar wood board). This will be a warm roof as the loft area will be habitable. Is this normal? I don't recall seeing this before but then I don't haunt new builds ;-)
The wooden boarding has been up for a while but there is no sign yet of anything going on top.
Google suggests that this may be a Scottish way of doing things.
Cheers
Dave R