You could insulate it as you'd only loose a bit of storage space. I would use MR MDF, finish in a mould resistant paint, and keep some sort of air flow path.
My guess would be that as long as other bricks can pull moisture then it shouldn't be critical.
Cheers - yeah there's plenty of space so I can lose a bit for insulation, I just didn't know how well it is likely to work! I prefer the idea of insulating as any insulation is probably good to have anyway...
You could insulate it as you'd only loose a bit of storage space. I would use MR MDF, finish in a mould resistant paint, and keep some sort of air flow path.
My guess would be that as long as other bricks can pull moisture then it shouldn't be critical.