Barrier between polystyrene and PVC cables

[spuorgelgoog]

I have polystyrene insulation around the edges of my floors (concrete screed, former underfloor heating). I am laying PVC cables (mains, telephone, data, satellite) around the edges of the rooms to be covered by a skirting front.

I need a barrier between the PVC cables and the polystyrene insulation. Some sort of plastic sheet that I can cut into strips and lay under the cables.

However what sort of material will be non-reactive with both PVC and polysytrene, and come possibly in sheets which I can cut down to strips about 4" wide?

I have considered using just a couple of layers of newspaper.

Cheap is always attractive.

TIA

Owain

[Andrew Gabriel]

It's not really permitted to install cables behind skirting. Have you considered using skirting trunking? I haven't looked at it in detail for ages, so I'm not sure what's currently on the market.

[spuorgelgoog]

I'm making my own skirting trunking :-) but it's open backed.

Most of the cables are actually below floor surface level in the gap between the screed and the wall.

Owain

[fred]

Is it clean enough for a tape to stick?

I was thinking of wide duct tape but maybe this:

Alternatively, is you prefer non-adhesive then warning or barrier tape would save cutting strips:

Newspaper is traditional and your floor sounds as if it has been done properly but it will hold moisture if there is any dampness or in case of spills.

[Martin Bonner]

Polythene?

If you happen to have some left-over DPC, I'd use that. (Not cheap to buy though.)

[Tim Lamb]

Easy to cut to width from the roll.