Adding a ply lining to a metal shed

[gringogordo]

I have a metal shed (on a concrete hard standing) that I use to store a couple of motorbikes. There is no condensation or anything like tat but it is quite damp and the bikes get a little 'mouldy' over winter. Someone suggested lining the shed with ply and I'm just beginning to look at this. I wondered if just lining the walls in a diy (bodge) way with some thin ply would make a difference - absorbing some of the moisture or whether I'm missing the point and it needs to be a much better tight fit ?

I was also wondering if one type of ply would be better than another. Apologies this is quite a vague question but I'm just following some random advice and the more I think about it the more I realise I don't know quite enough about what I'm doing!

 

[foxhole]

Pointless , you could glue insulation board to walls. To prevent mould you need ventilation.