Lead flashing a "lean to"

[Roofer]

The upstand can just go onto the render, do a nice straight deep chase, fix lead with wedges and seal with Leadmate mastic.

Alternatively, chop off the bottom of the plaster, fix Renderstop (bell bead) and make good. IMO it looks a more professional job but obviously ther's more work to it.

Yes, take felt up the wall

 

[martyc]

Sorry for this now but whats a bell bead?
Marty

 

[Roofer]

This

 

[martyc]

Lurvly!!
Ta for all the help...on the other post too.
Martin.