How to properly vent a bathroom fan
During my home inspection the inspector noticed that the builder (years ago) had vented the bathroom fans into the attic but not out the top of the roof. It looks like just regular dryer type venting, not insulated. So, I need to know how to properly vent it. I find conflicting advice on the net. I've seen things that say that if it's a short distance from ceiling to roof vent hole that I can use the uninsulated pipe but that if its a longer distance then I should use insulated pipe. But, aren't vents supposed to be on the upper 1/3 of the roof (why is this)? I've also seen one place that recommended it be vented out the soffit. There is no problem currently with any condensation dripping back into the house and I don't want to create one.