Is it just any wood that you can use for such construction or does it have to be of a certain kind? I was looking at a sawmill catalogue the other day and I was amazed by the option available. There is cedar, oak, meranti, pine, etc etc. Which one did you use for yours? Sorry I know the question sounded stupid, but I've never dealt with wood before so I don't know their properties and which is recommended to be use with high humidity.
Dan