Changing from system to combi in a 1990 single storey bungalow where pipes are in screed.

[pippy99]

Good morning guys, Im buying a 1990 single storey 2 bed bungalow where the ch pipes are buried in a screed. The previous owner only had a new Worcester boiler fitted last year sited next to airing cupboard and vented through outside wall, but the problem I face is I need the space in the loft and in need of cupboard space also.
I am hearing so many bad things about having a combi fitted and using the same pipework(buried in a screed) so is this a bad choice ? I also understand if the combi is fitted to the same pipework and you get a leak in the screed that home insurance companies wont pay out because it is wear and tear.
I am wondering if this is a big job and what the cost could be. The property has 2 beds, an en suite, bathroom, hallway, lounge and diner, Kitchen,and a conservatory.
Any advise would be gladly appreciated .
Cheers guys.

 

[Wayners]

Current boiler in loft?
I've known a couple of of leaks in concrete over the years so not common.
I don't like boilers in lofts and I prefer all pipes to be accessible.
Depends on what you want

 

[pippy99]

Hi, The present boiler is in the hallway and vented through external wall. We dont mind having the pipes running down the walls.