Incoming water main move - help

[richo106]

Hi

 

I currently have 15mm copper water pipe coming into the house and need to move it in a different room on the same side of the house (see pic. red is existing and blue is where I need it to be)

I was going to excavate the pipe over the weekend to expose it and see exactly where it goes.

 

what is the best way to joint this underground? Would people join it to blue water pipe incase I want to replace it all in the future?

 

I want this to go underneath the new slab (currently excavated out ready for the new slab) what is the best way to bring it through the wall and under the slab?

what options have I got? 
 

any advice/information greatly appreciated 

 

 

[PeterW]

Doubt it is copper underground - start digging and follow the pipe then replace with 20 or 25mm MDPE especially under a slab. Do not bury copper in concrete !

[Chanmenie]

As Peter said it’s unlikely to be copper underground, dig a hole outside, you’ll probably find it’s blue or black plastic unless the original house is very old then it could be lead. It will have been joined to copper somewhere.

[richo106]

House was built around 1960’s

I will dig back and hopefully found it then.

Would you run the new pipe under the new slab buried in the hardcore? (Floor make up: hardcore, 150mm slab, 200PIR and ufh/50mm screed with DPM’s etc)

 

Do you protect it with anything? Just a hole in the wall then concrete round it? 
 

Many Thanks 

[PeterW]

I tend to duct them in which is the correct practice or a short length can be wrapped in cheap foam pipe insulation and buried so its not in direct contact with concrete. 

[richo106]

Ducting sounds good to me, I have some lengths anyway which will be suitable.

 

I will bury this in the hardcore. Will the builders seal the DPM around this duct?

 

Am I ok to just bring it through the wall and concrete it in to seal it?

 

Thanks again