I am renovating the bathroom of a 1960 house. One of the main reasons I am having to do it is the ventilation is very poor and the ceiling paint continues to chip because the jib is too wet to hold the paint. What type of ventilation should I be looking at for a roughly 2200x2700 size bathroom with a. shower and tub? It has one window opposite the shower that is not double glazed and will hopefully be part of the Reno if the budget allows.