Floor insulation and screed at door junctions

[junglejim]

I’m just trying to work out the detail for pir insulation with ufh and screed at external door junctions. Along the exterior walls I think I need a vertical strip (25mm wide) of pir that will finish flush to the finished screed level and be hidden by the flooring and skirting. However where there are door junctions this will be against the bottom of the frame and the engineered floor will go over the top. In wondering if as it’s a high traffic area I should really use something like brigi foam at these junctions or am I over thinking it?

 Thanks for any help