Ivy on the facia needs soaking with a cleaning liquid and warm water.
Wash over it giving it a good scrub at the time.
Leave to soak in and then attack it again. (Go off and start another bit before going back).
Try and use a white jiffy pad.
It takes time but when you get used to it soon speeds up.
Some marks you may not get off but that is not often.
Ivy on tiles and paint work I am not sure about.
Hope this helps some.