lead work - fit into a wall or not?

[ponukumar]

Hi All,

I am going to render the walls after my Extention completion.

The question is - I'm extending the backside kitchen (single floor), for the roof, do I need to fit the lead into the wall and cement it?

my roofer says just nail to the wall and render will cover that and no water will go inside.

What are the best ways?

Thanks.

 

[Alastairreid]

Chased into the wall 25mm.

 

[datarebal]

Into wall, and point , render onto stop bead
Don't rely only on the render