Any issues with MLCP pipe contacting EPS beads?

[MarkyP]

I recall the PVC sheath of electrical cables and EPS should not come into contact, is there any issue with MLCP pipe work contacting EPS? I have a small sub-floor void where my UFH manifold presents and would like to fill it with EPS beads, is there any concern with a reaction between polystyrene and the (I think) polyethylene pipework? I could wrap the pipes in a cloth tape prior but it will be a faff and would rather not bother..

[Jeremy Harris]

No, it's fine.  The problem is only with the plasticisers in PVC cable sheathing, and polyethylene, or any other plastic that doesn't use plasticisers to make it soft and pliable, will be fine.