Rosefolly, I've been watching this thread for replies, only because this seems like an interesting topic. I don't know how many people have walked this road yet, though! It's all kind of new - well, very old, but very new, lol.

I'm sure I'm gonna say a big "doh!" when you answer, but what are "SIPs"?

:)
Dee

Hi Dee -- SIPs are Structural Insulated Panels. They are very strong and also energy efficient, so they are gaining in popularity. However, they are made of either expanded polystyrene (EPS), extruded polystyrene foam (XPS) or polyurethane foam. Sort of like styrofoam. I can understand why some people like them, but I don't. I prefer to use materials a little closer to natural materials except where the synthetic material is vastly superior. In this case, I suspect there are viable natural alternatives.

I never heard of SIPs myself until a couple of years ago when I fell in love with timberfame and began to do the research.

Rosefolly