Insulating a polycarbonate leanto

[Needz]

My polycarbonate leanto I have decided to insulate by means of adding wooden Batons and stapled breathable insulation on to them. There is a gap of about 2cm from the insulation and the polycarbonate sheets and I intend to fit in ceiling plasterboard flush up against the insulation, leaving the main beams showing. SuperQuilt consists of 19 layers of True Aluminium and Recycled Wadding and also has a built in Vapour Control Layer.
Any concerns or suggestions will be greatly appreciated

 

[Mr Chibs]

You may get condensation under some bits of the twin wall sheets where the insulation is sagging. If this is a permanent addition, PIR foam boards may have been a better choice, as they won't sag.

Thinking about it, perhaps you could use double sided tape to the space quilt to keep it as tight as possible to the twin wall.