Water pipes buried under floor advice needed

[gpbeck]

If they are not wrapped in something airtight salts from the cement will reach the copper and corrode it. If he doesn’t understand this then stop him working. Even quality plastic pipe in conduit would be preferable.

 

[Gumdrops]

If they are not wrapped in something airtight salts from the cement will reach the copper and corrode it. If he doesn’t understand this then stop him working. Even quality plastic pipe in conduit would be preferable.

Thank you. I'm shocked he doesn't know this, or perhaps doesn't care.

 

[king of pipes]

Thanks very much for your advice. the pipes have been laid on sub floor like in the photo so will be a real pain to wrap tape around. What can I say to the plumber to get him to listen? He thinks it's fine. Is there anything in the regs?

I wouldn't be happy with bare copper laid directly on the slab , it needs to be pressure tested if there are soldered joints ? and be protected from unforseen damage before any floor insulation is fitted, there are better options in my opinion continuous plastic coated soft copper on a roll or Hep 2o in a conduit system would be better using a manifolded system you can avoid any joints under your floor slab . Kop

 

[Gumdrops]

Hi again, So here are photos of some of the pipes. This doesn't look great to me, what do think?

 

[gpbeck]

Next they’ll tell you it’s too late the screed’s coming.

 

[Timmy D]

I can’t remember the distance off the top of my head but I’m pretty sure pipes need to be a minimum distance away from the edge of the screed (maybe 150mm).

They should also be above the dpm and insulation. And I think the minimum screed depth above the pipes is 50mm.

Also, one of those pipes is labelled gas, that can’t go in how it is. It can’t just be wrapped. It either needs to go in a purpose built open ended conduit or installed with factory pre sleeved copper pipe.

Lots of wrong here.

 

[king of pipes]

Very poor in all honesty it's not hard to make such a better job of the pipework it would be better run on top of the insulation wrapping in hairfelt by 50 % , gas pipework should not go under the damp proof membrane and insulation it needs to be above my go to product is Gastite pipe flexible stainless steel piping with a manufactured protective sleeve which can be buried in screed or sunk into the insulation prior to laying the screed . Kop

 

[Gumdrops]

Very poor in all honesty it's not hard to make such a better job of the pipework it would be better run on top of the insulation wrapping in hairfelt by 50 % , gas pipework should not go under the damp proof membrane and insulation it needs to be above my go to product is Gastite pipe flexible stainless steel piping with a manufactured protective sleeve which can be buried in screed or sunk into the insulation prior to laying the screed . Kop

Thanks for this. The plumber is gas safe registered which makes it even more concerning. We are going to get someone in the check it and rectify urgently before the screed goes down. Thanks everyone for all your advice.