I must admit that in the past I would have liked for doors to remain the way they were, solid one piece sections, however, like everything else in the world, construction methods have changed, virtually all timber doors are now veneered on laminated timber cores.
As far as external doors are concerned they are very stable in most weather conditions as long as you ensure the door is decorated in full including all four edges.
Nuvu exterior oak or white painted folding doors
We continue to make timber doors in the traditional manner, namely, one piece timber per section of door and with Mortice & Tenon joints.
There is a range of quality doors of the type and construction mentioned directly above that are available to view here.
Info supplied by www.directdoors.com
Any questions, email info@directdoors.com and ask "Chippy"