Hi All
Im planning on using in floor heat with pex tubing under subfloor between joists. It would seem the most efficient way to do this would be to limit the amount of low density flooring materials (like carpet) above.  I thought maybe using advantech subfloor as finished floor by filling in holes and cracks with wood putty, sanding, staining and varnishing. Advantech doesn’t seem to swell much from being exposed to liquid so my thought is this may turn out to be a pretty smooth and nice looking floor (depending on how stain adheres). It’s also a green method of building because it results in less material being used. Huber claims floors can be painted and sealed with oil based products so I’m assuming this process would hold up well.

What are your thoughts?
Has anyone tried this with success?
I’d love to see pictures.