How do I replace a radiator with a slightly wider one?

[glider26]

Hi,

I wish to replace the rad in the pic below in our downstairs toilet as part of a complete refurbish of the room. The new rad (left in the the pic below) is also a nominal 500mm wide but with the TRV and L/S, the assembly is actually approx 70mm wider than the old one. How do I get around this please?

 

[denso13]

Alter the pipework. Can you access the pipes below the floor?

 

[glider26]

I was going to remove and replace the tiles anyway, so maybe I can access the pipework. What should I expect below? Screed? How easy is it to alter the pipework in the screed if that's the case? Thanks.

 

[dilalio]

Who knows mate?
But if you're removing the floorcovering anyway it's just a matter of doing what needs doing, to alter the pipework... In the world of plumbing, access is key... Make it easy for yourself... Making good is child's play!

 

[DavidSWP]

You will need to either:

1. remove the tiles and floorboards below them to access the pipework and alter before replacing.
2. remove part of the ceiling immediately below it to alter pipework and drill a new hole through the floor to make a new hole for the new pipe position.
3. Untidy but don't do anything with the floor ceiling and put 2 45 degree pipe connectors in to get the vertical pipe where you want it.

 

[glider26]

Thanks DavidSWP but this is on the ground floor and there are no floorboards, just screed below the tiles I suspect. I wonder how much work it is to alter pipe work in screed?

 

[dilalio]

Chase out floor large enough to work on pipe, cut back and clean/prepare, extend pipework to new locations with soldered joints; protect bare pipework with felt lagging or duct tape to protect it from line in cement; make good hole with sand and cement. Simples: couple hours work!

 

[Terry7556]

You could get a 400 mm rad and. As it is now shorter than the existing one and the valve connections , make the gap up with a radiator valve extension
Toolstation part number 37352