Hi need help! Having living room down stairs converted into bedroom with on-suit bathroom for my disabled wife. The bathroom will have no natural ventilation therefore will require a fan. The routing of the ducting is my main problem, as the bathroom has no walls which are external, the nearest external wall would be about 5 meters away. But in this new bathroom would be the old (obviously disused and bricked up) fireplace with the associated chimney above. Can I just cut a hole through the brick work into the chimney and let it vent up the chimney? Any help! Thanks.
