Water pipes under screed

[Roger440]

Oh my!

 

Its not just the plumbing. Just reminding myself why i do almost everything myself!

 

The hessian wrap clearly doesnt come up far enough, The screed will be in contact with the pipes if left like that.

 

Why does the insulation stop short of the walls?

 

Nick covered pretty much everything, except, for gods sake, pressure test it BEFORE and floor gets laid.

[PeterW]

@Nickfromwales can you recall if gas pipes can be buried..? I thought it was ducted and vented at one end..?

[Nickfromwales]

8 hours ago, PeterW said:

@Nickfromwales can you recall if gas pipes can be buried..? I thought it was ducted and vented at one end..?

Last time I worked with gas it was permissible, as long as it was the coated pipe and it was 100% encapsulated in concrete. The idea being gas must not be allowed to escape into ( fill ) pockets or cavities, that’s when the 💩 hits the fan. Gas will just light and burn if discharging freely, but becomes explosive when captured in voids. 

 

You were even allowed to do the same behind a plasterboard in a dry-lined wall, believe it or not(!!), as long as you used dab or cement to fully encapsulate along it length. Not a fan of that idea lol, but when I drilled through one the theory worked well, in practice, as the gas just blew out of the 5.5mm hole I made dead centre of it…….cue lots of profanities……..and not into the cavity between the block and plasterboard of the dot n dab wall.

If ducted, it must be sealed inside the dwelling, and the duct must be a continuous run, with the other end left open externally ( to atmosphere ) so a ruptured pipe would just blow gas out to the clouds.

 

I can check with my mate who’s still GSR’d if it’s for a job?

[GreenGables]

Thanks for all the comments. The plumber is on the Gas Safe Register so I'm pretty appalled he hasn't protected the gas pipe properly. We have decided to bring in someone else to check and redo the work. What a shambles. 

[TerryE]

Make sure the new guy does a proper pressure test on the water pipework, say at 6 bar, before any concrete it poured.

Edited December 9, 2022 by TerryE

[GreenGables]

50 minutes ago, TerryE said:

Make sure the new guy does a proper pressure test on the water pipework, say at 6 bar, before any concrete it poured.

I certainly will. Thank you.