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Sorry didn't see this at the time.
I just searched YouTube and watched everything I could find, although there isn't that much on them, almost nothing from a DIY perspective.
- You basically build the window apertures in as you build it, so you finish a panel where you need an opening, add the bits above/below the window, then carry on the wall with a full height panel, the creating the opening, you frame around the opening with timber to cap the panels and give something to fix the window to.
- Yes, you wrap it in breathable membrane like tyvek, then battens and cladding.
- Whatever you want inside! I'll probably just paint the OSB, if I was plaster boarding it like a garden room type thing, I'd probably batten the inside and then board it to give a service cavity for cables/pipes as cutting those into the sips seems like a ball ache.
- Cladding is TBC, cheapest good option is barn board (like a big 7" featheredge) @ approx £600, but I'm leaning towards PVC double shiplap, it's approx £1500, maybe a bit more, but maintenance free. The back of the building against the boundary will have metal box profile, cheap and maintenance free.
- You basically build the window apertures in as you build it, so you finish a panel where you need an opening, add the bits above/below the window, then carry on the wall with a full height panel, the creating the opening, you frame around the opening with timber to cap the panels and give something to fix the window to.
ThePeginator
so cool, so many questions!
where did you learn more about SIPS? I'd like to read as much as I can about the process.
how and when do you cut the window apertures?
what goes on the outside? tvyek?
what goes on the inside? pain the OSB straight, or add ply?
what are you cladding with?
good luck with the project!