Quick responding underfloor heating.

Has anybody used this as a method to allow a very thin but quick responding underfloor screed ?

http://reppel.nl/en/composite-steel-floor-decking-systems/max4

http://www.cdi-icm.co.uk/image/data/PDF/Max4%20Therm%20reinfrocement%20sheeting%20CDI.pdf


It would allow a screed to be as low as 25mm. I know this is not how underfloor heating is supposed to be used, but i'm looking for something that will respond quite quickly.

Apparently Max 4 Therm is thinnest, strongest and lightest underfloor heating
http://www.approvedbusiness.co.uk/viewarticle_872.aspx

JonathonS

Does such a fast response not obviate one of the key advantages of UFH, which is that the thermal mass of the heated concrete emits a gentle heat as a result of the low-temp flow? A super-thin fast reacting slab implies higher flow temperatures, and quick cool-down as well as quick warm-up.

JonathonS

JonathonS wrote: »

Does such a fast response not obviate one of the key advantages of UFH, which is that the thermal mass of the heated concrete emits a gentle heat as a result of the low-temp flow? A super-thin fast reacting slab implies higher flow temperatures, and quick cool-down as well as quick warm-up.

It should not require higher flow temperatures, although the pipes could be placed closer together.
I was thinking of using this in a 50mm screed as i would be worried about the strength of a 50mm screed without reinforcement.

JonathonS

I spoke to a builder who had dug out a 10 year old slab with UFH. The pipes had been tied to the steel mesh before the pour. They noticed that the pipe was friction-worn in places, which they put down to expansion/contraction. He reckoned it would eventually have lead to leaks. He recommended only using fibre-reinforced concrete with UFH, no mesh.