On Saturday, 2 May 2020 15:23:20 UTC+1, wrote:
I need to continue replacing the asbestos-cement panels on an ex-chicken
house with box profile 0.5mm steel panels. I'll be replacing all the 2x2
studwork because what's there is either in the wrong place, rotten or
wormed. The problem is that I can't see how to inset the steel windows.
The windows are side-fixing and will sit on the raised part of the
profile (whereas the lower part of the profile will be attached to the
studwork). This must be a standard problem so I hope someone here knows
the "obvious" solution that's evading me at the moment.

Steel flashing?

.... sealing off reveals such as doors and windows. We stock a standard 90º corner or 130º ridge flashings in popular colours. Flashings are generally fitted directly to the high point of the profiled sheet using self-drilling stitching TEK screws (ST22) that has a coarse thread that joins two pieces of sheet metal together. Flashings are available in standard 3m lengths. They should be fitted with a 150mm overlap.

https://www.cladco.co.uk/flashings

door jamb flashing

https://www.cladco.co.uk/flashings/c...ade-flashings#

Owian