Which floorboards for uninsulated patio?

[_Speedo_]

I am planning to put up a purchased glass-enclosed patio with the help of a friend (who generally knows more than me). I was thinking of using "ground screws" for the foundation and loose-laid vinyl/plastic flooring. The question is, which flooring boards would be suitable to use? The patio will be uninsulated and cold in the winter. Indoor flooring boards will probably absorb moisture and swell, right? Can I use some variant of formplyfa, for example?

 

[nioiku]

Mount the root floorboard floating on floor paper.
If possible, try to fix a moisture barrier or just a thin styrofoam underneath, and it will be good!

 

[_Speedo_]

But what should I have directly on the floor joists, ceiling-rote, and then the root floorboard on that? I'm not familiar with all the layers...

 

[nioiku]

Depending on how much space you have underneath, lay a frigg.
Frigg does not absorb moisture and provides insulation from below and is easy to cut between the beams.
Lay plastic, floor paper, chipboard on it. Then you can lay the carpet on the chipboards. Or if you prefer takrot. That should be enough.

 

[_Speedo_]

Ok, thanks for the answers!