Russell griffiths

PVC pipe, and eps insulation

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Posted (edited)

Evening all. 

So we understand that pvc electrical cable should not come into contact with EPS insulation as it effects the plasticity of the cable which can lead to the cable sheathing failing. 

 

So does this happen with pvc drainage pipe??

 

i will be using EPS insulation in my floor under my screed and a couple of shower pipes will need to be chased into the top layer of EPS, I’m concerned that the EPS could make the pipes brittle and wondering about either changing the insulation in those areas or coating the channel I cut with something and then installing the pipe in that. 

Maybe as simple as some large pipe lagging. 

🤷‍♂️🤷‍♂️🤷‍♂️🤷‍♂️🤷‍♂️🤷‍♂️🤷‍♂️🤷‍♂️🤷‍♂️🤷‍♂️🤷‍♂️

Edited by Russell griffiths

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Hope not else I'll be in the shit

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PVC cable sheaths incorporate a "placticiser" to make them "plastic", aka flexible, bendy. As I understand it it's a leaching of of this placticiser that reacts badly with eps.

 

Rigid pvc pipe lacks the plasticizer.

 

Ergo you're OK.

 

Put another way, you can place pvc cables in pvc trunking, within eps as the trunking is unplacticised. 

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Phhhhhhhhhh ovewrthinking again 🙄. Bloody Hell.

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1 hour ago, AnonymousBosch said:

Phhhhhhhhhh ovewrthinking again 🙄. Bloody Hell.

 

Another doth hold that crown Sire!

 

(No it's not me!)

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