I live in the UK, with damp cold winters and modestly hot summers. I have a 2.4Mx2.4M (8ftx8ft) shed that I use as a woodworking workshop. I'd like to make it warmer in winter and cooler in summer. I think there are some challenges in achieving this while avoiding condensation in the winter, unless I put permanent heating in there like I have in my home. Is this correct?
For cooling in summer I was thinking of fitting an extractor fan on one of the gable ends and a filtered intake on the opposite gable, to allow fresh air to flow in and hot air to flow out. Will this totally ruin my ability to keep the shed warm and dry in winter? I guess I could fit a shutter onto each and seal them up when it's colder.
For heating in the winter I was thinking of fitting a moisture barrier on the inside and then a layer of mineral wool insulation, maybe with a sheet of plywood over the top. I'm no expert though, and I worry this might just result in the mositure being trapped between the barrier and the wood and subsequent damp/rot will come creeping in.
In summary I don't really know what I'm doing and would appreciate any advice.