Lead Gulley through Pitched Roof

[three_sheds]

I'm having trouble working out what to do on our new pitched roof with flat roof behind - help appreciated!

We intend to have a flat roof running to the front (for reasons too difficult to explain here!) with a pitched roof in front to hide the flat. I would like to channel the water through the pitched roof in a discrete manner to the gutter a the bottom of the pitched roof - anyone got any ideas??? The level of the flat roof will be a couple of (plain clay) tiles higher than the gutter. Does that make sense?

Thanks in anticipation ...

Paul.

 

[masona]

Can't quite follow it, is it possible to do a drawing or picture ?

 

[[EK]Sparky]

I think i know what your doing
Just put lead box gutters running though back of pitch roof draining out on to tiles at front, i would of thought one every 3ft should be enough