Advice for re-routing radiator pipes please?

[mbc0]

Hi,

I am making our bathroom larger which has resulted in a radiator in the middle of the room which I need to move. I recently buried pipes into my parents concrete floor but at my house the floor is somewhat different. There is a cavity under the concrete which then has polystyrene insulation (how you get a cavity under a concrete floor is puzzling me) I can dig up the old pipes to re-route them but am looking for advice in repairing the floor? can I just fill with screed or do I need to repair the insulation? Hopefully the picture will help! Many Thanks

2018-01-06 11.29.08.jpg

 

[snowhead]

There's an air gap between the concrete and Insulation??

If so, the subsoil has settled,, probably not compacted when levelled.
The concrete floor hasn't settled.
The floor needs ripping up and relaying.

 

[mbc0]

Many Thanks, I appreciate the advice, I will get a builder round to take a look but think you are right!

 

[king of pipes]

You will need to take up a section of the flooring bare copper pipework will be affected by being in contact with concrete, why heat the area under your floor poor install i am afraid pipework should be fully insulated under floors and in voids . cheers kop

 

[mbc0]

Many Thanks king of pipes, I am going to be taking the flooring up next week.

 

[Bogart]

Am assuming it is a solid screed floor and not a block and beam one, as with the latter an airspace is the norm.