is it OK for underfloor cables to be in contact with PIR insulation board foil side

[nailscrew]

We are in the process for installing underfloor PIR insulation boards and I have a question regarding electric cables. On a photo cable rests on a beam and insulation board will be installed on top, squishing it. Is it acceptable? Shouldn't cable be moved under the beam? Do I need to ask builders to make a cut in a PIR board to leave air gap around cable at least?

 

[PeterW]

Will be fine if it is PIR (not EPS)

[nailscrew]

45 minutes ago, PeterW said:

Will be fine if it is PIR (not EPS)

Thanks. What if it was EPS?

[PeterW]

EPS and wires shouldn’t be in contact as the styrene in the EPS and the plasticiser in the cable outer becomes degraded.