Getting rid of the radiators and installing underfloor heating

[OurTracey]

We're giving our downstairs a complete overhaul after 15 years, so long over due.
The shabby carpets are going to replaced with wood/laminate, so I thought we could get rid of the radiators and replace them with underfloor heating.
Has anyone done this? Is it very expensive?

is the floor concrete, or wood with a gap underneath?

How old is your boiler?

we have complete underfloor heating down stairs.
Have a wall hung fire in living room and a designer rad in the kitchen more for looks and never on.
if you get the self laying cables and the required under lay - to go under the cables to reflect the heat back to the room it isnt that expensive - we paid around £700 for 50ish sq mts of cable and underlay unfitted.
My dh layed it, cost to run isnt silly for us either

Cost varies, both for installation and running costs, if you are doing pipes off the central heating or electric heat pads.

Yes, have done. Cost a few 100 for small bathroom. Used it maybe once though...

If you're going to be doing a large area you definitely need a water pipe system, not electric. The water system is more expensive to install but cheaper to run. Electrics are more responsive within a short time period so good for a bathroom for example.

The new part of our downstairs has a concrete sub base and water UFH under tiles - it's fantastic and in the winter I find the room stays warm for a great part of the day, even once the active heating has gone off as the floor retains the warmth. The rest of the house gets cold once the radiators are off (old house).

If you're trying to retro-fit under a suspended timber floor, it can be done but I think it's more complicated as you have to lifet all the existing floorboards, lay good insulation and then suspend the pipework. Only way you'll know is to get a quote.

Oh and make sure it's on a separate timer than the rest of the heating. ie radiators on for just 1 hour between 6.30 and 7.30 am UFH you would want to be on earlier as it takes longer to warm up.

Sorry for the delayed reply.
Hall, lounge and dining room, all floorboards. Baxi back boiler about 15 years old is behind the gas fire in the lounge.
We do have underfloor heating in the wet room and it cost about £300 I think.
But I don't remember it being a particularly 'big' job as there was just the towel heater to take out and DH did that.
I no longer use the radiators to dry the washing so I only came up with the idea because I thought it would look good. Not really bothered about practical.