Wall Insulation on Beams or Floorboards?

[Ed21]

Hi everybody, 

Quick question, might seem obvious, but thought I'd check ? 

This is one of two rooms with new floor that is not far off ready for 50mm wall Insulation.


The gaps round the side have now been foamed since this pick was taken, so the question is what's best?
Put the 50mm direct on top of the beams/insulation or same, but leave a gap with a bit of foam.
Or
Stick the chipboard floor down and insulation on top of that, with foam or sealant in any gaps.

Ed 

[TonyT]

I would run a bead of silicone along the floor and stick the wall insulation to it.

 

then foam any undulations.

then foil  tape the right angle between the wall and floor boards

[Ed21]

Cheers tony, logic said that was the way, but been burnt before, so worth an ask