Re: how easy is building windows into exterior porch wall
Welcome to the Bunnings Workshop community @lethal. It's sensational to have you join us, and many thanks for your question about installing leadlight panels.
If you could provide us with a little more detail on the style of leadlight panels you've chosen, and the type of porch wall you have, I trust our knowledgeable members will be able to provide some excellent advice for your project. Some images of the leadlights and wall would really paint the picture for us.
The basic principle would be to create your openings in the wall, frame them out with timber, install the leadlights within the frames and then add timber trim to finish their surrounds.
I look forward to hearing more details about your project and providing some further assistance.