UFH Options?

[wozza]

Hi All,

Looking for some advice on heating our extension – on the plan, the pink area is the new floor and the green area is the existing floor of around 23 square meters. The house was built in 1983, I do not know if the existing floor is insulated, but would assume not.  The new floor will be insulated.

 

 

 

We would like to install wet UFH, using our existing gas boiler. So far, I have come up with the following options:

1.     

D         1 Dig up the existing floor and replace with an insulated floor so the whole floor will be insulated and a typical wet system with screed top can be fitted. This     will obviously cost – but I can remove the existing floor myself to reduce costs down.

 

1        2 Leave existing floor as it is, use low profile over boards to fit the UFH – I have seen a system that uses 10mm pipe so it only raises floor height by 15mm, not ideal but not a massive issue.https://www.nu-heat.co.uk/retrofit-ufh/lopro10/

 

1       3 Grind channels for the UFH pipe into the new and old floor for the UFC pipe to be fitted. This would mean no increase in floor height, but heat loss through the existing floor  https://www.jk-gb.com/

 

Does anyone have any other options or thoughts on the above?

Does anyone know a rough cost to replace the existing floor with an insulated floor? (23 Square meters)

There will be quite a lot of kitchen units fitted (including a large peninsular) – I am assuming that the UFH shouldn’t be fitted under the units?

 

 

Edited October 12, 2018 by wozza

[Lesgrandepotato]

We went with option 1, we also dropped the floor level a touch 70mm to help with a sense of space 

[Gav_P]

I did the first option too