Storing bikes in winter

[WarrenG]

Having a few problems with my bike-store / Shed arrangement in the current constantly wet and mild weather,
I had an old shed that I have converted to use as bike storage, and recently noticed that a few leaks had occurred which were making things damp. So to avoid the bikes getting damaged, I've made a few water tightness improvements with some black-tar type sealant and added ventilation grilles.
The problem is, while the leaks have stopped, the ventilation seems to be encouraging mould to occur on anything fabric - like bar-tape.
So before I go completely insane changing my world of bike storage, has anyone got any best way to do it hint(s)?

[bigdom]

Depends on how much you want to invest? My shed is quite a robust construction, vapour barriered and boarded inside, completely dry. Personally I'd lose the vents, as that will be adding to the problem. Assuming a shiplap construction on outside, is this treated with anything to stop the water soaking in?

Another option could be something like this - https://www.wiggle.co.uk/ctc-cycling-uk-plastic-bi...

[WarrenG]

Yes, I think you're right about the vents, I was basing the choice over the bin/bike store I have out front which has vents in from it's original design.
but being a shiplap type thing, I could do with lining it inside as well.