My house has a room very humid (85%) and susceptible to temperature changes. Even opening the windows I have mold issues sometimes. The other part of the house is well isolated and acceptable regarding humidity.
Is it best just to isolate this room from the remaining house by keeping its door closed, avoiding air humidity and cold to propagates through the remaining house? Or in other hand would it be better just to keep it open transferring part of this humidity and therefore keeping the average level lower in this room?
Around the room there is the bathroom, street, roof and ground. The humidity is mainly for 2 reasons. 1. Bathroom wall; 2. exterior walls. Most likely the neighbour garden.