I have had built a Garden Room and am finishing the interior myself
It has conventional pitched slate roof and eaves to floor uPVC double glazing.
The roof is supported on a steel ring beam(150x75x18mm) which is totally within the building envelope.
The ring beam is supported on 6 steel posts(70x70x5mm SHS)These are also within the building except
where they go thro' the insulated concrete floor to a depth of 300mm.
I am going to clad the steelwork with 25mm thick sawn oak. 3 sides on the posts and inner and lower faces on the beam.
Will the oak be suitable insulation against cold bridging or will I have to use thin insulation under the oak or
perhaps a damp proop membrane