Why is that so important?

Well, I mean, there's two things that we want to try and do.

One is air tightness, and then the other is thermal bridging.

Do you know what thermal bridging is? I do not.

Cool.

So, I mean, although it's not very conductive, it is somewhat conductive.

And what I'm talking about is wood, right? Plywood, fir, pine, whatever.

work out?