Wet Under Flooring heating - insulate under floorboard?

[Andehh]

Looking at having wet underfloor heating done in our bathroom, but all the floorboards are tongue & groove, glued down etc.

Would it be hugely detrimental to insulate under the floor boards, then lay the pipes in their channeled housings on top of the floorboards, having the floorboards sandwiched in between?

The downstairs ceiling is due to come out at a later date, so would far prefer to have it torn up then the floorboards themselves.

 

[JohnD]

how will you open the door?

 

[Andehh]

The door can already take a 25-20mm rise in the bathroom floor due to very very thick carpet in the bedroom having required the door to be trimmed.

Edit: what about having the whole underfloor heating system under the floorboard, with some thick insulation? Would the chipboard floor and tiles act as too much of a barrier to the heat as well?

 

[JohnD]

just bite the bullet and take the floor up.

After cutting the tongue and lifting the first one or two, the rest will be easier.