ICF Door threshold details

[Kernow]

Does anyone have any drawings of how they have detailed their doorway thresholds when building with a polystyrene ICF.  Specifically radon barrier and cold bridging details?

 

I’m not totally convinced my detailing is best, but it may be too late for any other options. 

Thanks

[Nickfromwales]

Do you have a drawing of what you have detailed?

[Jenki]

Any of this help?

 

 

 

 

 

 

[Kernow]

Thanks Jenki,

 

That’s useful, I hadn’t considered the use of a higher compaction rated insulation in the threshold. That should help eliminate the cold bridging detail I was worried about. 
 

Nickfromwales, our details around the door threshold/doc are very vague, but we are basically having a 2 layer radon barrier, one under a ground bearing slab, then one internally, lapped up the wall. 

[Kernow]

Currently thinking of either of these options, Option A would be easier to detail as I thinking fixing the small piece of xps500 over a radon barrier could prove challenging. 
 

In hindsight I know I should have used xps500 under the sill as a cavity closer, but too late for that now. 
 

Option A

 

 

Option B