We've all been in such situations. You take a shower in a very hot water, and after that, not only you don't feel clean and fresh, you just see a whole wall of steam that is so stubborn that it just stays even after you run the fan. Your mirror will be fogged up for the whole day, the towels will be still wet the next day, and if you inspect carefully the ceiling corners and sides of the window frames, you might see some tiny black spots of mould that have started to grow there without being noticed. Such a bathroom is not only a nuisance, it is actually a signal that something is wrong. Having a bathroom that is damp all the time is not just a matter of personal inconvenience, it could really compromise the main structure of the house and make the household members sick. If there is no proper ventilation, mould will grow, paint will start peeling off, wood will become rotten, and in some cases, this can even cause breathing problems. However, if you have a plan to do a remodel...