Connecting downstairs radiators to the ones in rooms above

[MissClementine]

Our three storey house has a conventional boiler downstairs, tank in the loft set up. The radiators on the top floors are plumbed in under the wooden floor boards. The radiators on ground floor all have pipe work which is under concrete floors. I want to eliminate all pipes under concrete floors where possible in case of future leaks.
Can I have the downstairs radiators re piped so that the pipe work comes down the walls from above and boxed in? Has anyone ever done this? Is this a complicated job? All the pipe work is plastic. We are getting upstairs carpets redone and was hoping to get done at same time.

Bump

Yes you can have this done but depending on the size of the house it could be a significant job, and also depends on how your radiators are piped upstairs, ie if they have used small 15mm pipe to the nearest radiators upstairs, there might not be enough capacity to add in a feed to a radiator downstairs. You could end up repiping the upstairs as well.

Why are you so worried about pipes in the concrete, especially when they are plastic. All new houses have them all behind the plasterboard walls etc which are a far greater risk from having a picture hook nail pit through them

There are 2 rooms on the middle floor with radiators not sure how they are pipes though. I am concerned because the previous owner was a diyer and we are slowly fixing everything he has done stage by stage. I doubt he will have done a good job laying the pipes judging from his other efforts. I have already dealt with one leaky pipe.