membrane/drip tray/fascia detail on cassette roof?

[junglejim]

I’m hoping someone can offer some advice. I’m a bit confused about the fascia detail and order of layers on a cassette roof. 
 

my layers are: osb cassette - breather membrane - counter batten - batten

 

 at the eaves I have rafter ends - battens - fascia with a fascia vent above and a drip tray tucked under the membrane. I’m trying to work out how to ensure any water has a smooth run over the fascia.

 

1. Should counter battens go all the way to the edge of the cassette?

 

2. Does the drip tray go on top of  the over fascia vent or underneath? 

 

3. Usually the fascia would be pushed up to the underside of the tiles but I would have thought doing that in this instance would force the membrane uphill. The only way I can think to negate this is to finish counter battens early.

 

 I feel like I going down a rabbit hole and there must be an easy solution. Hopefully someone can help.

 

 Many thanks

[junglejim]

Hoping someone can offer some advice? 🤞

[Duncan62]

Literally having this issue now!

 

I think counter battens should end early.

So the drip tray can sit on the roof deck with a slight kick to the eaves board.

 

The membrane sits on top of the tray.

 

The vent sits on top of the membrane to allow air into the cavity behind the tiles, exciting at the ridge vents (and take moisture away from the building) 

 

The tiles then sit on top of the vent strips.

[Iceverge]

Picture/sketch please.