Removing Radiators Temporarily to Retile Bathrooms

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Any recommendations regard the above? I am remodeling two bathrooms and the new floors in each will be higher (approximately 1/2 to 1 full inch higher) than the original floor heights. I am concerned about safely being able to extend the original piping/plumbing to meet the valve/fittings on the old radiators. I have one plumber telling me "no problem" and another "shaking his head in disbelief". Any suggestions would be greatly appreciated.
 
There should be no problem that I can see .. might be a wee bit awkward depending on where you decide to join the pipe if the existing pipe is not long enough.

I did similar in my own bathroom recently and everything is working OK
 
I appreciate the reply. The concern I have is with the length of the original piping needing to be extended via a fitting. I am under the assumption that this will be no big deal. I was hoping to hear confirmation on that. Good to hear that someone with a similar experience is 'leak free'.[/quote]
 
well if you undo the nuts on the radiator valves from the pipe (you get verry wet...) you would be left with the nut held on the end of the pipe by the olive.
You could screw a 15mm isolating valve to this ,then put a new short length of pipe on the other end of the isolator ,and then on up to the radiator.
Ive done this in the past and the advantage from a maintainance point of view is that you can switch off both the rad valves and both the isolating valves and remove the radiator without draining it or the system.
 
Avoid isolating valves on heating systems like the plague! They're all junk quality and leak really easily on heating systems.

I wonder if it's worth lifting the rads just 1/2 to 1 inch ?

If your pipes are in suspended (wooden) floors they will very likely be trapped with very little movement, so may not simply lift up even 1/2". The obvious way to do it would be to cut the pipes and solder on extra pieces of pipe - not the slightest problem for a plumber, as long as your system refills ok after you've drained it (part way).
 

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