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oh and the smaller bore takes more electricity to move the same volume of water through it. So not only does it use more gas for the higher temperature, it uses more electricity for the pump. Anyone have any other insights? I'd be interested to here justifications as to why you might use a...

Florad recently recommended that we install a 10mm pipe system at 180mm centres in a concrete/screed floor system. I took that to 3 other opinions who said that 15mm pipes are always preferably. I've been digging further in order to understand what to use and where. It seems that 10mm is...

Diggy a bit depair, florad offer those prefab boards - where 10mm seems to be more common: http://www.florad.co.uk/design-and-technical/floor-heating-products I don't know why 10mm is more common for prefabbed, where as 15mm for standard lay. But i suspect as this "profoil" is their main...

The UFH company never got back to me on an updated design. AstraCad were very kind and did a free rough mock up of what it should be. Basically two serpentines, one going to the right to cover the bi-folding doors. And another to the bottom. The builders have said if I draw it up correctly they...

The supplier and designer is florad, http://www.florad.co.uk/. I think they have reduced the space from 200mm to 180mm, as they are using 10mm pipe instead of 15mm pipe. But I'm not sure. The builders are laying the pipes and doing the screeding. The plumber, who I assigned, is connecting the...

My builders are about to fit my UFH and have provided the layout found below from their designers. The floor area is about 36M2: I added the external doors, and external walls text and lines myself - sorry for sketchyness. I've done a fair bit of research on UFH and layouts and this one...

That was the end result, to agree to disagree. The builders will let the plumber leave it pressurised for as long as he thinks best, as there is no harm done from doing so. My understanding is that leaving it underpressure ensures that there is expansion room when hot water is fed into the...

My plumber and my builders just had a bit of a fall out The builders are installing the pipework, the plumber the manifold and pressure test. The builders say to leave the system pressurised for 24 hours, then they'll start screeding. That it does not need to remain pressurised during the...