22mm - 15mm

[newhousemadness]

Hi I need to change lead piping in the bathroow at the boiler it is 22mm copper can I change to 15mm to feed the bathroow or should I put 22mm

 

[Nige F]

Boiler? ...I guess you mean hot water cylinder ...22 to the bath..reduced to 15 from there to basin.

 

[newhousemadness]

yes it is hot water tank boiler is 15mm to pipe from hot water tank then goes into bathroom with lead piping approx 22mm do i need a lead to copper compression fitting to join onto lead piping from cold system

 

[Nige F]

Ah...possibly you are mistaking galvanised iron for lead....you see lead was only used for mains water through house...or short tails from iron pipes to bath and basin .Anyway....you can get a leadlock compression fitting or iron thread to copper....best place is a plumbers merchant, try scraping the pipe in question with an old knife. etc. lead is soft and v. shiny Galv, iron much harder and less shiny.....hope this helps identify. Really you should remove lead altogether and replace with copper or plastic.

 

[andybarlow1]

Hi I need to change lead piping in the bathroow at the boiler it is 22mm copper can I change to 15mm to feed the bathroow or should I put 22mm

the bath taps are fed by 22mm but everything else is 15mm. You can reduce to 15mm and then come back up to 22mm just for the bath if that helps[/quote]

 

[DP]

Nigel come to Scotland and I will show you lead a plenty at the HW cylinder.

Some moons ago I installed a combi and the cylinder was removed. When I cut back the cold feed to cylinder (to cap this pipe), it started to leak. Had to replace with copper to cold feed cistern in the loft (through two apartments above)

 

[Nige F]

Ah, That explains it..I`ve never been North of Watford Interesting tho`...I thought the soft water would not be good for the lead....perhaps it`s worse for iron?

 

[newhousemadness]

Thanks, sorted used lead to copper compression fittings i left 22mm around bathroow to hot water tank and fed from that for sink etc can you cure leaks...

only kidding but had a few

 

[Paul Barker]

There's plenty of led up North including all gas pipe runs around the house. Led prices are quite good at the moment, which is nice. I get quite a few emergencies due to led, often because of a poorly fitted ledlock.

I don't do my own part p so can't very fy this but a sparks got me to remove a stop tap into led put a short piece of copper in so he could fix his bonding to copper within .6 of stop tap. I went on from there in plastic. Seems farse icle to me that they couldn't get a good bond on led, and that now they have a far worse one because all there is is about 6inches of copper.

He also tells me that now when you do your cross bonding in a bathroom you have to take it up to the earth in every light fitting and every switch. That's going to be fun. One more reason to try and avoid bathrooms.

After watching him work I'm sure glad I didn't go in for corgi's pathetic scheme. We're well out of it if you ask me, their regs have gone even worse than ours.

 

[ChrisR]

Plenty of houses in Surrey/west London are all lead internally, with a sprinkling of iron. Sometimes when the lead comes out it leaves great curving furrows in the walls - ideal for plastic pipe!
On some 30's estates there's a mix of copper one side of the street and "other" the other side. Also some lath and plaster with others plasterboard!