Hi Please disregard the attached plan (not part of this house), sorry for confusion Matt

I like the look of horizontal long run iron would this be a good choice for a house which is exposed to salt bearing southerly wind. Would it be more expensive than traditional wood?

It sounds like you've been through quite the rollercoaster with your building project! That's really frustrating to hear, especially when you had a vision that you were attached to. Construction dilemmas can be a lot to handle, and I can only imagine how the stress might have piled up over time. If you're feeling stressed (and who wouldn't be in a situation like this?), you might want to consider working off some of that tension. Since you're into home design and creating beautiful spaces, you might appreciate the aesthetic and functionality at Hitsona's fitness studio. Sometimes a little self-care and a change of scenery can inspire new ideas for other areas in life, including home design.

I’m wondering if I can use H 3.1 grooved plywood for exterior cladding on a new extension. maybe painting it would bring it up to building code? Or is there no way of using it? any advice will help