Dormer cheek flashing into party wall

[mariogg]

Hi all

I’m in the process of a DIY loft conversion and don’t seem to find any information regarding the flashing of a dormer cheek against a party/brick wall.

please see photos attached, there will be hung plain 10x6 tiles on the dormer cheek, and the slates below the capping stones as shown can stay.

Warm roof will be coming out to the edge of my property so there won’t be direct rainfall on it.

Does moulding my own U shaped valley out of lead, nailed onto the bottom battens of the cheek and bedded around 20mm below the slates, work as a solution/valley?

can anyone provide any advice?

thanks

 

[catlad]

I take it you will sheath the dormer cheek in ply or similar? and yes a u shaped valley/channel sounds like the way to go, in a couple of pieces depending how long.

 

[mariogg]

I take it you will sheath the dormer cheek in ply or similar? and yes a u shaped valley/channel sounds like the way to go, in a couple of pieces depending how long.

yes this will have ply then masterboard then battens & tiles

Will cut into 1.5m strips

thank you