Perimeter insulation strip needed with ICF walls

[Adam2]

Am I correct in thinking that this perimeter insulation strip used on the exterior of a floor screed is there for insulative benefits and not to do with expansion? If so, with all my external walls being EPS I can avoid having to install this?

 

The floor build up if it matters: concrete slab, dpm layer, PIR, slip membrane, UFH pipes, 55mm screed 

[tonyshouse]

Yes, screed seems thin, needs pipe sleeves and movement joints in doorways 

[Adam2]

5 minutes ago, tonyshouse said:

Yes, screed seems thin, needs pipe sleeves and movement joints in doorways 

Was planning on Cemfloor which specifies min 25mm cover on pipes so assuming 16mm pipes I have 34mm cover but yes will be ensuring the contractor creates doorway joints. 

 

Though my question was really about the need for perimeter insulation given that the walls are EPS

[tonyshouse]

No need, possibly on internal walls if masonry