vivienne wykes wrote:

Hi thanks for that,

I am converting a barn in the Scottish Borders. It has poured concrete on th
ground floor and joists on the first floor.
When I do the heating it will be justr the joists no existing floorboards
due to woodworm....


Do you mean that you are NOT doing the ground floor? That is the logical
place to do it.


Under-wood-floor is harder, more expesnive and has a few issues.

Still the best tho, but not cheap...