Extractor fan in main bathroom after a shower leaves the room steamy and with condensation on the walls, in reality its useless. The fan is located in the ceiling above the bath/shower, its a 4" fan with timer and on max setting.
It is vented along some ducting to the eaves fascia board, externally I can see no exit although there us maybe a 2" gap between the brick and the fascia, in any case I aint crawling in there to find out if it exits or not.
So I have a ventilation tile on the ridge of the roof, from the exit point in the ceiling to the ridge tile is approx 11 feet, the ridge tile has an internal alminium tube already fitted, this I believe was for the `old` boiler fume exhaust (boiler since relocated) which is now extinct.
So question, if I upgrade the fan to say a 6" with higher extraction output (timer & humidity) using an expandable tube to connect am I likely to get an improvement as the fan would now be extracting vertically / diagonally instead of horizontally.