Replacing leaking yorkshire under floorboards

I would cut back the legs to uncorroded pipe. You'll have a nice new T with three new legs, which you can probably assemble on the bench, and three straight couplings to make. If applicable, careful to check you are using the right combination of imperial and metric pipe and fittings.

If you are not sure what you are doing, get an experienced plumber to sort you out.

To be honest, if you have six failing like this, I'd be thinking carefully about whether a re-pipe was needed as it's probably only a matter of time until more fail. Again, an experienced plumber will be happy to advise and quote.

2 things to be cautious of;
That old foam will be very flammable, strip it all away from any flame area and any other junk in the floor, consider a flameproof mat or other non combustable to protect the floor area.

You are likely to be moving the remaining pipes about, this may cause leaks elsewhere on the pipework if there are other suspect joints.
As above pre made Tee with tails and compression or pushfit connectors, you may need a slip joint to get the last one in.

Thnxs Snowhead! This isn't my thread but your mention of a 'slip' joint has had me searching the Internet for half an hour till I came across an 'Ultimate Handyman' youtube video demonstration of one... . Never knew they existed or how to use till now!.... Thanks again! 👍

Chuck said:

I would cut back the legs to uncorroded pipe. You'll have a nice new T with three new legs, which you can probably assemble on the bench, and three straight couplings to make. If applicable, careful to check you are using the right combination of imperial and metric pipe and fittings.

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I like that idea Chuck, saves a lot of hassle and no chance of fire under the floor.

Chuck said:

If you are not sure what you are doing, get an experienced plumber to sort you out.

To be honest, if you have six failing like this, I'd be thinking carefully about whether a re-pipe was needed as it's probably only a matter of time until more fail. Again, an experienced plumber will be happy to advise and quote.

Click to expand...

It looks to me like the pipes weren't cleaned before assembly or no flux was used, I will inspect all carefully. Sadly where I live experienced plumbers are simply not available, I have searched hard.

snowhead said:

2 things to be cautious of;
That old foam will be very flammable, strip it all away from any flame area and any other junk in the floor, consider a flameproof mat or other non combustible to protect the floor area.

Click to expand...

Ohh yes very flammable, I would certainly remove it first, as for the junk I have slowly been filling my bins up from the assorted detritus left here, even gardening is affected by digging up crisp, biscuit & chocolate wrappers, amazing how some people live!

snowhead said:

You are likely to be moving the remaining pipes about, this may cause leaks elsewhere on the pipework if there are other suspect joints.

Click to expand...

Yup I reckon the system refill might be a multi-staged affair to finally work out the last of the leaks, ATM I can only do the blindingly obvious.

snowhead said:

As above pre made Tee with tails and compression or pushfit connectors, you may need a slip joint to get the last one in.

Click to expand...

Great idea especially the slip joint, of course I don't expect the likes of B&Q have ever heard of it, but if all else fails I can drill out a standard fitting.

Thank you everybody for your help, certainly added some ideas to my pot.

I finally tracked down a really great plumber today who did the whole lot very professionally for a good price. Thank you so much Andy for anybody looking in North Lincolnshire.